Quarter	National Currency Units per US Dollar
1960-01-01	5.61500000461500
1960-04-01	5.61500000461500
1960-07-01	5.61500000461500
1960-10-01	5.61500000461500
1961-01-01	5.61500000461500
1961-04-01	5.61500000461500
1961-07-01	5.95166667161833
1961-10-01	6.62500000562500
1962-01-01	6.62500000562500
1962-04-01	6.62500000562500
1962-07-01	6.62500000562500
1962-10-01	6.62500000562500
1963-01-01	6.62500000562500
1963-04-01	6.62500000562500
1963-07-01	6.62500000562500
1963-10-01	6.62500000562500
1964-01-01	6.62500000562500
1964-04-01	6.62500000562500
1964-07-01	6.62500000562500
1964-10-01	6.62500000562500
1965-01-01	6.62500000562500
1965-04-01	6.62500000562500
1965-07-01	6.62500000562500
1965-10-01	6.62500000562500
1966-01-01	6.62500000562500
1966-04-01	6.62500000562500
1966-07-01	6.62500000562500
1966-10-01	6.62500000562500
1967-01-01	6.62500000562500
1967-04-01	6.62500000562500
1967-07-01	6.62500000562500
1967-10-01	6.62500000562500
1968-01-01	6.62500000562500
1968-04-01	6.62500000562500
1968-07-01	6.62500000562500
1968-10-01	6.62500000562500
1969-01-01	6.62500000562500
1969-04-01	6.62500000562500
1969-07-01	6.62500000562500
1969-10-01	6.62500000562500
1970-01-01	6.62500000562500
1970-04-01	6.62500000562500
1970-07-01	6.62500000562500
1970-10-01	6.62500000562500
1971-01-01	6.62500000562500
1971-04-01	6.62500000562500
1971-07-01	6.62500000562500
1971-10-01	6.62833333675000
1972-01-01	6.63499999900000
1972-04-01	6.63499999900000
1972-07-01	6.63499999900000
1972-10-01	6.63499999900000
1973-01-01	6.63703333233333
1973-04-01	6.64999999900000
1973-07-01	6.64999999900000
1973-10-01	6.64999999900000
1974-01-01	6.64999999900000
1974-04-01	7.92999999900000
1974-07-01	8.56999999900000
1974-10-01	8.56999999900000
1975-01-01	8.56999999900000
1975-04-01	8.56999999900000
1975-07-01	8.56999999900000
1975-10-01	8.56999999900000
1976-01-01	8.56999999900000
1976-04-01	8.56999999900000
1976-07-01	8.56999999900000
1976-10-01	8.56999999900000
1977-01-01	8.56999999900000
1977-04-01	8.56999999900000
1977-07-01	8.56999999900000
1977-10-01	8.56999999900000
1978-01-01	8.56999999900000
1978-04-01	8.56999999900000
1978-07-01	8.56999999900000
1978-10-01	8.56999999900000
1979-01-01	8.56999999900000
1979-04-01	8.56999999900000
1979-07-01	8.56999999900000
1979-10-01	8.56999999900000
1980-01-01	8.56999999900000
1980-04-01	8.56999999900000
1980-07-01	8.56999999900000
1980-10-01	8.56999999933333
1981-01-01	15.15333333266670
1981-04-01	18.71999999900000
1981-07-01	18.87666666600000
1981-10-01	34.30333333233330
1982-01-01	35.26166666566670
1982-04-01	36.12333333233330
1982-07-01	38.09999999933330
1982-10-01	40.14166666566670
1983-01-01	40.24999999900000
1983-04-01	40.29666666566670
1983-07-01	41.27333333233330
1983-10-01	42.55666666566670
1984-01-01	43.39999999900000
1984-04-01	43.52999999966670
1984-07-01	44.23333333333330
1984-10-01	46.96740000000000
1985-01-01	48.29620000000000
1985-04-01	49.49386666666670
1985-07-01	51.27000000000000
1985-10-01	52.75333333333330
1986-01-01	54.00333333333330
1986-04-01	55.28666666666670
1986-07-01	56.62300000000000
1986-10-01	58.03056666666670
1987-01-01	59.39946666666670
1987-04-01	61.33993333333330
1987-07-01	63.39683333333330
1987-10-01	66.96856666666670
1988-01-01	72.78973333333330
1988-04-01	74.87070000000000
1988-07-01	76.79890000000000
1988-10-01	78.75960000000000
1989-01-01	79.87623333333330
1989-04-01	80.74276666666670
1989-07-01	81.91176666666670
1989-10-01	83.48606666666670
1990-01-01	85.25906666666670
1990-04-01	88.10843333333330
1990-07-01	93.21273333333330
1990-10-01	99.73693333333340
1991-01-01	109.68433333333300
1991-04-01	119.88000000000000
1991-07-01	127.20700000000000
1991-10-01	132.95833333333300
1992-01-01	136.21533333333300
1992-04-01	130.28000000000000
1992-07-01	134.85333333333300
1992-10-01	136.67666666666700
1993-01-01	138.09333333333300
1993-04-01	138.72000000000000
1993-07-01	143.12333333333300
1993-10-01	148.75000000000000
1994-01-01	152.71000000000000
1994-04-01	154.84000000000000
1994-07-01	158.03333333333300
1994-10-01	162.68333333333300
1995-01-01	168.50000000000000
1995-04-01	175.88333333333300
1995-07-01	183.31666666666700
1995-10-01	191.21666666666700
1996-01-01	198.44000000000000
1996-04-01	204.48666666666700
1996-07-01	210.69666666666700
1996-10-01	217.13333333333300
1997-01-01	223.29333333333300
1997-04-01	229.62000000000000
1997-07-01	235.86333333333300
1997-10-01	241.61333333333300
1998-01-01	247.17666666666700
1998-04-01	253.34666666666700
1998-07-01	260.57666666666700
1998-10-01	267.81666666666700
1999-01-01	275.11333333333300
1999-04-01	282.64666666666700
1999-07-01	289.61333333333300
1999-10-01	295.36544600000000
2000-01-01	300.73000000000000
2000-04-01	305.65000000000000
2000-07-01	310.68000000000000
2000-10-01	315.68666666666700
2001-01-01	320.63000000000000
2001-04-01	325.54000000000000
2001-07-01	331.20333333333300
2001-10-01	338.11000000000000
2002-01-01	345.98666666666700
2002-04-01	354.88333333333300
2002-07-01	364.37000000000000
2002-10-01	374.03010752688200
2003-01-01	383.67704301075300
2003-04-01	393.50249103942700
2003-07-01	403.62268817204300
2003-10-01	413.84666666666700
2004-01-01	423.20666666666700
2004-04-01	432.64666666666700
2004-07-01	442.58000000000000
2004-10-01	453.30666666666700
2005-01-01	463.69000000000000
2005-04-01	473.00761111111100
2005-07-01	482.52000000000000
2005-10-01	491.92935483871000
2006-01-01	501.17867319508500
2006-04-01	508.98938888888900
2006-07-01	517.05094444444400
2006-10-01	517.98826523297500
2007-01-01	518.67900537634400
2007-04-01	518.72233333333300
2007-07-01	518.61155555555600
2007-10-01	510.45666666666700
2008-01-01	496.39000000000000
2008-04-01	508.28627240143400
2008-07-01	547.44263620071700
2008-10-01	552.82314516129000
2009-01-01	561.53224270353300
2009-04-01	573.79522401433700
2009-07-01	585.26811469534000
2009-10-01	572.55624551971300
2010-01-01	551.86502688172000
2010-04-01	526.38224014336900
2010-07-01	515.37763799283100
2010-10-01	509.69189784946200
2011-01-01	503.22444892473100
2011-04-01	502.88924910394300
2011-07-01	507.11073835125500
2011-10-01	509.43252329749100
2012-01-01	509.70718125960100
2012-04-01	503.42170071684600
2012-07-01	499.32380465949800
2012-10-01	499.15316129032300
2013-01-01	500.54226574500700
2013-04-01	498.99122401433700
2013-07-01	499.69907347670200
2013-10-01	499.83476702509000
2014-01-01	526.16480222734300
2014-04-01	550.44020318996400
2014-07-01	539.30124014336900
2014-10-01	537.36255555555600
2015-01-01	535.94982718894000
2015-04-01	533.58698566308300
2015-07-01	534.59381899641500
2015-10-01	534.13244802867400
2016-01-01	536.18078791249600
2016-04-01	538.99219175627200
2016-07-01	550.35133154121900
2016-10-01	553.43315770609300
2017-01-01	558.36471966205900
2017-04-01	568.93779211469500
2017-07-01	574.20250000000000
2017-10-01	568.54734946236600
2018-01-01	568.97563940092200
2018-04-01	566.05887777777800