Year	current US$
1995	5400000.09536743
1996	4599999.90463257
1997	4199999.80926514
1998	9300000.19073486
1999	7599999.90463257
2000	8100000.38146973
2001	8600000.38146973
2002	8899999.61853027
2003	6900000.09536743
2004	6800000.19073486
2005	7099999.90463257
2006	9800000.19073486
2007	6800000.19073486
2008	7800000.19073486
2009	16000000
2010	18000000
2011	19200000.762939498
2012	20500000
2013	21600000.3814697
2014	24700000.762939498
2015	39900001.5258789
2016	38599998.4741211
2017	36200000.762939505
2018	57000000
2019	63099998.4741211
2020	29700000.762939498