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    "period": "1985-01",
    "year": 1985,
    "month": "Ene",
    "buy_rate": 3.26,
    "sell_rate": 3.28
  },
  {
    "period": "1985-02",
    "year": 1985,
    "month": "Feb",
    "buy_rate": 3.26,
    "sell_rate": 3.28
  },
  {
    "period": "1985-03",
    "year": 1985,
    "month": "Mar",
    "buy_rate": 3.31,
    "sell_rate": 3.33
  },
  {
    "period": "1985-04",
    "year": 1985,
    "month": "Abr",
    "buy_rate": 3.21,
    "sell_rate": 3.24
  },
  {
    "period": "1985-05",
    "year": 1985,
    "month": "May",
    "buy_rate": 3.17,
    "sell_rate": 3.2
  },
  {
    "period": "1985-06",
    "year": 1985,
    "month": "Jun",
    "buy_rate": 3.11,
    "sell_rate": 3.13
  },
  {
    "period": "1985-07",
    "year": 1985,
    "month": "Jul",
    "buy_rate": 2.99,
    "sell_rate": 3.01
  },
  {
    "period": "1985-08",
    "year": 1985,
    "month": "Ago",
    "buy_rate": 2.98,
    "sell_rate": 2.99
  },
  {
    "period": "1985-09",
    "year": 1985,
    "month": "Sep",
    "buy_rate": 2.98,
    "sell_rate": 2.99
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  {
    "period": "1985-10",
    "year": 1985,
    "month": "Oct",
    "buy_rate": 2.99,
    "sell_rate": 3
  },
  {
    "period": "1985-11",
    "year": 1985,
    "month": "Nov",
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    "sell_rate": 3.01
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  {
    "period": "1985-12",
    "year": 1985,
    "month": "Dic",
    "buy_rate": 2.95,
    "sell_rate": 2.97
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  {
    "period": "1986-01",
    "year": 1986,
    "month": "Ene",
    "buy_rate": 2.92,
    "sell_rate": 2.94
  },
  {
    "period": "1986-02",
    "year": 1986,
    "month": "Feb",
    "buy_rate": 2.82,
    "sell_rate": 2.84
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  {
    "period": "1986-03",
    "year": 1986,
    "month": "Mar",
    "buy_rate": 2.8,
    "sell_rate": 2.82
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  {
    "period": "1986-04",
    "year": 1986,
    "month": "Abr",
    "buy_rate": 2.81,
    "sell_rate": 2.82
  },
  {
    "period": "1986-05",
    "year": 1986,
    "month": "May",
    "buy_rate": 2.84,
    "sell_rate": 2.86
  },
  {
    "period": "1986-06",
    "year": 1986,
    "month": "Jun",
    "buy_rate": 2.8,
    "sell_rate": 2.81
  },
  {
    "period": "1986-07",
    "year": 1986,
    "month": "Jul",
    "buy_rate": 2.8,
    "sell_rate": 2.81
  },
  {
    "period": "1986-08",
    "year": 1986,
    "month": "Ago",
    "buy_rate": 2.81,
    "sell_rate": 2.82
  },
  {
    "period": "1986-09",
    "year": 1986,
    "month": "Sep",
    "buy_rate": 2.87,
    "sell_rate": 2.88
  },
  {
    "period": "1986-10",
    "year": 1986,
    "month": "Oct",
    "buy_rate": 2.98,
    "sell_rate": 2.99
  },
  {
    "period": "1986-11",
    "year": 1986,
    "month": "Nov",
    "buy_rate": 3.04,
    "sell_rate": 3.05
  },
  {
    "period": "1986-12",
    "year": 1986,
    "month": "Dic",
    "buy_rate": 3.05,
    "sell_rate": 3.06
  },
  {
    "period": "1987-01",
    "year": 1987,
    "month": "Ene",
    "buy_rate": 3.04,
    "sell_rate": 3.06
  },
  {
    "period": "1987-02",
    "year": 1987,
    "month": "Feb",
    "buy_rate": 3.09,
    "sell_rate": 3.1
  },
  {
    "period": "1987-03",
    "year": 1987,
    "month": "Mar",
    "buy_rate": 3.22,
    "sell_rate": 3.23
  },
  {
    "period": "1987-04",
    "year": 1987,
    "month": "Abr",
    "buy_rate": 3.22,
    "sell_rate": 3.23
  },
  {
    "period": "1987-05",
    "year": 1987,
    "month": "May",
    "buy_rate": 3.4,
    "sell_rate": 3.42
  },
  {
    "period": "1987-06",
    "year": 1987,
    "month": "Jun",
    "buy_rate": 3.64,
    "sell_rate": 3.66
  },
  {
    "period": "1987-07",
    "year": 1987,
    "month": "Jul",
    "buy_rate": 3.46,
    "sell_rate": 3.47
  },
  {
    "period": "1987-08",
    "year": 1987,
    "month": "Ago",
    "buy_rate": 3.2,
    "sell_rate": 3.22
  },
  {
    "period": "1987-09",
    "year": 1987,
    "month": "Sep",
    "buy_rate": 3.37,
    "sell_rate": 3.4
  },
  {
    "period": "1987-10",
    "year": 1987,
    "month": "Oct",
    "buy_rate": 3.5,
    "sell_rate": 3.53
  },
  {
    "period": "1987-11",
    "year": 1987,
    "month": "Nov",
    "buy_rate": 4,
    "sell_rate": 4.03
  },
  {
    "period": "1987-12",
    "year": 1987,
    "month": "Dic",
    "buy_rate": 4.74,
    "sell_rate": 4.79
  },
  {
    "period": "1988-01",
    "year": 1988,
    "month": "Ene",
    "buy_rate": 4.93,
    "sell_rate": 4.97
  },
  {
    "period": "1988-02",
    "year": 1988,
    "month": "Feb",
    "buy_rate": 4.96,
    "sell_rate": 4.99
  },
  {
    "period": "1988-03",
    "year": 1988,
    "month": "Mar",
    "buy_rate": 4.96,
    "sell_rate": 4.99
  },
  {
    "period": "1988-04",
    "year": 1988,
    "month": "Abr",
    "buy_rate": 5.05,
    "sell_rate": 5.09
  },
  {
    "period": "1988-05",
    "year": 1988,
    "month": "May",
    "buy_rate": 5.1,
    "sell_rate": 5.15
  },
  {
    "period": "1988-06",
    "year": 1988,
    "month": "Jun",
    "buy_rate": 6.33,
    "sell_rate": 6.38
  },
  {
    "period": "1988-07",
    "year": 1988,
    "month": "Jul",
    "buy_rate": 6.34,
    "sell_rate": 6.36
  },
  {
    "period": "1988-08",
    "year": 1988,
    "month": "Ago",
    "buy_rate": 6.33,
    "sell_rate": 6.35
  },
  {
    "period": "1988-09",
    "year": 1988,
    "month": "Sep",
    "buy_rate": 6.33,
    "sell_rate": 6.35
  },
  {
    "period": "1988-10",
    "year": 1988,
    "month": "Oct",
    "buy_rate": 6.33,
    "sell_rate": 6.35
  },
  {
    "period": "1988-11",
    "year": 1988,
    "month": "Nov",
    "buy_rate": 6.33,
    "sell_rate": 6.35
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  {
    "period": "1988-12",
    "year": 1988,
    "month": "Dic",
    "buy_rate": 6.33,
    "sell_rate": 6.35
  },
  {
    "period": "1989-01",
    "year": 1989,
    "month": "Ene",
    "buy_rate": 6.33,
    "sell_rate": 6.35
  },
  {
    "period": "1989-02",
    "year": 1989,
    "month": "Feb",
    "buy_rate": 6.33,
    "sell_rate": 6.35
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  {
    "period": "1989-03",
    "year": 1989,
    "month": "Mar",
    "buy_rate": 6.33,
    "sell_rate": 6.35
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  {
    "period": "1989-04",
    "year": 1989,
    "month": "Abr",
    "buy_rate": 6.33,
    "sell_rate": 6.35
  },
  {
    "period": "1989-05",
    "year": 1989,
    "month": "May",
    "buy_rate": 6.33,
    "sell_rate": 6.35
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  {
    "period": "1989-06",
    "year": 1989,
    "month": "Jun",
    "buy_rate": 6.33,
    "sell_rate": 6.35
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  {
    "period": "1989-07",
    "year": 1989,
    "month": "Jul",
    "buy_rate": 6.33,
    "sell_rate": 6.35
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  {
    "period": "1989-08",
    "year": 1989,
    "month": "Ago",
    "buy_rate": 6.33,
    "sell_rate": 6.35
  },
  {
    "period": "1989-09",
    "year": 1989,
    "month": "Sep",
    "buy_rate": 6.33,
    "sell_rate": 6.35
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  {
    "period": "1989-10",
    "year": 1989,
    "month": "Oct",
    "buy_rate": 6.33,
    "sell_rate": 6.35
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  {
    "period": "1989-11",
    "year": 1989,
    "month": "Nov",
    "buy_rate": 6.33,
    "sell_rate": 6.35
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  {
    "period": "1989-12",
    "year": 1989,
    "month": "Dic",
    "buy_rate": 6.33,
    "sell_rate": 6.35
  },
  {
    "period": "1990-01",
    "year": 1990,
    "month": "Ene",
    "buy_rate": 6.33,
    "sell_rate": 6.35
  },
  {
    "period": "1990-02",
    "year": 1990,
    "month": "Feb",
    "buy_rate": 6.33,
    "sell_rate": 6.35
  },
  {
    "period": "1990-03",
    "year": 1990,
    "month": "Mar",
    "buy_rate": 6.33,
    "sell_rate": 6.35
  },
  {
    "period": "1990-04",
    "year": 1990,
    "month": "Abr",
    "buy_rate": 7.01,
    "sell_rate": 7.23
  },
  {
    "period": "1990-05",
    "year": 1990,
    "month": "May",
    "buy_rate": 7.3,
    "sell_rate": 7.6
  },
  {
    "period": "1990-06",
    "year": 1990,
    "month": "Jun",
    "buy_rate": 7.3,
    "sell_rate": 7.6
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  {
    "period": "1990-07",
    "year": 1990,
    "month": "Jul",
    "buy_rate": 7.3,
    "sell_rate": 7.6
  },
  {
    "period": "1990-08",
    "year": 1990,
    "month": "Ago",
    "buy_rate": 9.55,
    "sell_rate": 9.85
  },
  {
    "period": "1990-09",
    "year": 1990,
    "month": "Sep",
    "buy_rate": 10.2,
    "sell_rate": 10.5
  },
  {
    "period": "1990-10",
    "year": 1990,
    "month": "Oct",
    "buy_rate": 11.07,
    "sell_rate": 11.37
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  {
    "period": "1990-11",
    "year": 1990,
    "month": "Nov",
    "buy_rate": 11.2,
    "sell_rate": 11.5
  },
  {
    "period": "1990-12",
    "year": 1990,
    "month": "Dic",
    "buy_rate": 11.2,
    "sell_rate": 11.5
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  {
    "period": "1991-01",
    "year": 1991,
    "month": "Ene",
    "buy_rate": 11.319,
    "sell_rate": 11.5952
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  {
    "period": "1991-02",
    "year": 1991,
    "month": "Feb",
    "buy_rate": 12.0063,
    "sell_rate": 12.3158
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  {
    "period": "1991-03",
    "year": 1991,
    "month": "Mar",
    "buy_rate": 12.67,
    "sell_rate": 13
  },
  {
    "period": "1991-04",
    "year": 1991,
    "month": "Abr",
    "buy_rate": 12.67,
    "sell_rate": 13
  },
  {
    "period": "1991-05",
    "year": 1991,
    "month": "May",
    "buy_rate": 12.67,
    "sell_rate": 13
  },
  {
    "period": "1991-06",
    "year": 1991,
    "month": "Jun",
    "buy_rate": 12.67,
    "sell_rate": 13
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  {
    "period": "1991-07",
    "year": 1991,
    "month": "Jul",
    "buy_rate": 12.5,
    "sell_rate": 12.5
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  {
    "period": "1991-08",
    "year": 1991,
    "month": "Ago",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1991-09",
    "year": 1991,
    "month": "Sep",
    "buy_rate": 12.5,
    "sell_rate": 12.5
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  {
    "period": "1991-10",
    "year": 1991,
    "month": "Oct",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1991-11",
    "year": 1991,
    "month": "Nov",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1991-12",
    "year": 1991,
    "month": "Dic",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1992-01",
    "year": 1992,
    "month": "Ene",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1992-02",
    "year": 1992,
    "month": "Feb",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1992-03",
    "year": 1992,
    "month": "Mar",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1992-04",
    "year": 1992,
    "month": "Abr",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1992-05",
    "year": 1992,
    "month": "May",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1992-06",
    "year": 1992,
    "month": "Jun",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1992-07",
    "year": 1992,
    "month": "Jul",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1992-08",
    "year": 1992,
    "month": "Ago",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1992-09",
    "year": 1992,
    "month": "Sep",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1992-10",
    "year": 1992,
    "month": "Oct",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1992-11",
    "year": 1992,
    "month": "Nov",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1992-12",
    "year": 1992,
    "month": "Dic",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1993-01",
    "year": 1993,
    "month": "Ene",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1993-02",
    "year": 1993,
    "month": "Feb",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1993-03",
    "year": 1993,
    "month": "Mar",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1993-04",
    "year": 1993,
    "month": "Abr",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1993-05",
    "year": 1993,
    "month": "May",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1993-06",
    "year": 1993,
    "month": "Jun",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1993-07",
    "year": 1993,
    "month": "Jul",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1993-08",
    "year": 1993,
    "month": "Ago",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1993-09",
    "year": 1993,
    "month": "Sep",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1993-10",
    "year": 1993,
    "month": "Oct",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1993-11",
    "year": 1993,
    "month": "Nov",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1993-12",
    "year": 1993,
    "month": "Dic",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1994-01",
    "year": 1994,
    "month": "Ene",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1994-02",
    "year": 1994,
    "month": "Feb",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1994-03",
    "year": 1994,
    "month": "Mar",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1994-04",
    "year": 1994,
    "month": "Abr",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1994-05",
    "year": 1994,
    "month": "May",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1994-06",
    "year": 1994,
    "month": "Jun",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1994-07",
    "year": 1994,
    "month": "Jul",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1994-08",
    "year": 1994,
    "month": "Ago",
    "buy_rate": 12.5,
    "sell_rate": 12.5
  },
  {
    "period": "1994-09",
    "year": 1994,
    "month": "Sep",
    "buy_rate": 12.7914,
    "sell_rate": 12.7914
  },
  {
    "period": "1994-10",
    "year": 1994,
    "month": "Oct",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1994-11",
    "year": 1994,
    "month": "Nov",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1994-12",
    "year": 1994,
    "month": "Dic",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1995-01",
    "year": 1995,
    "month": "Ene",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1995-02",
    "year": 1995,
    "month": "Feb",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1995-03",
    "year": 1995,
    "month": "Mar",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1995-04",
    "year": 1995,
    "month": "Abr",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1995-05",
    "year": 1995,
    "month": "May",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1995-06",
    "year": 1995,
    "month": "Jun",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1995-07",
    "year": 1995,
    "month": "Jul",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1995-08",
    "year": 1995,
    "month": "Ago",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1995-09",
    "year": 1995,
    "month": "Sep",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1995-10",
    "year": 1995,
    "month": "Oct",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1995-11",
    "year": 1995,
    "month": "Nov",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1995-12",
    "year": 1995,
    "month": "Dic",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1996-01",
    "year": 1996,
    "month": "Ene",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1996-02",
    "year": 1996,
    "month": "Feb",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1996-03",
    "year": 1996,
    "month": "Mar",
    "buy_rate": 12.87,
    "sell_rate": 12.87
  },
  {
    "period": "1996-04",
    "year": 1996,
    "month": "Abr",
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    "sell_rate": 12.87
  },
  {
    "period": "1996-05",
    "year": 1996,
    "month": "May",
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    "sell_rate": 12.87
  },
  {
    "period": "1996-06",
    "year": 1996,
    "month": "Jun",
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    "sell_rate": 12.87
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