Year	US Dollars
1994	6.36358
1995	12.4663
1996	9.12469
1997	12.81643
1998	14.30149
1999	93.81464
2000	150.90711
2001	173.81111
2002	278.08094
2003	175.18402
2004	155.39
2005	143.5994
2006	213.12491
2007	114.13006
2008	132.77014
2009	85.11903
2010	90.71875
2011	190.64849
2012	151.09993
2013	108.91341
2014	51.4755
2015	44.03991
2016	89.74796
2017	240.48628
2018	153.25515
2019	81.29314
2020	70.74954
2021	77.99891