Year	US Dollars
1988	1.76938
1989	3.20328
1990	3.3622
1991	101.61351
1992	126.15802
1993	83.8723
1994	50.849
1995	56.65378
1996	71.53966
1997	53.43551
1998	85.89976
1999	157.03276
2000	102.89648
2001	87.74994
2002	100.74041
2003	114.91912
2004	99.42057
2005	104.62605
2006	108.28235
2007	103.91523
2008	123.78728
2009	121.9975
2010	125.32351
2011	130.62118
2012	120.38336
2013	93.25438
2014	97.32083
2015	116.3466
2016	59.4694
2017	58.58797
2018	120.19358
2019	9.4843
2020	109.04033
2021	224.88802