Year	National Currency Units per US Dollar
1960-01-01	0.00000901708333333334
1961-01-01	0.00000902000000000000
1962-01-01	0.00000902000000000000
1963-01-01	0.00000902000000000000
1964-01-01	0.00000904000000000000
1965-01-01	0.00000904000000000000
1966-01-01	0.00000904000000000000
1967-01-01	0.00000904000000000000
1968-01-01	0.00000904000000000000
1969-01-01	0.00000904000000000000
1970-01-01	0.00001149208333325810
1971-01-01	0.00001486041666659490
1972-01-01	0.00001414999999990690
1973-01-01	0.00001400000000000000
1974-01-01	0.00001400000000000000
1975-01-01	0.00001430257936507940
1976-01-01	0.00001578115000941090
1977-01-01	0.00001782803030303030
1978-01-01	0.00002404166666666670
1979-01-01	0.00003753372931101960
1980-01-01	0.00007603615438538010
1981-01-01	0.00011016178491050600
1982-01-01	0.00016074948282014300
1983-01-01	0.00022366918735137300
1984-01-01	0.00036346143460184300
1985-01-01	0.00051956715232700300
1986-01-01	0.00066903321105928500
1987-01-01	0.00085461371178649000
1988-01-01	0.00142141733165023000
1989-01-01	0.00211996120572698000
1990-01-01	0.00260643737712688000
1991-01-01	0.00416887211214737000
1992-01-01	0.00686054123578619000
1993-01-01	0.01096444557813060000
1994-01-01	0.02977814806357720000
1995-01-01	0.04573843952961290000
1996-01-01	0.08128100419770610000
1997-01-01	0.15159491415544800000
1998-01-01	0.26047260089873900000
1999-01-01	0.41898402745545500000
2000-01-01	0.62432530168533200000
2001-01-01	1.22826860623445000000
2002-01-01	1.51234220640204000000
2003-01-01	1.50254158540530000000
2004-01-01	1.42599539916714000000
2005-01-01	1.34129764241797000000
2006-01-01	1.42995441629023000000
2007-01-01	1.29988548348391000000
2008-01-01	1.29877822895100000000
2009-01-01	1.54686925646214000000
2010-01-01	1.49896398189974000000
2011-01-01	1.67165758187465000000
2012-01-01	1.79160369267206000000
2013-01-01	1.90452909090909000000
2014-01-01	2.18900970324362000000
2015-01-01	2.72296580698287000000
2016-01-01	3.02245681661334000000
2017-01-01	3.64857035612334000000