Year	current US$
1995	22000000
1996	23000000
1997	26000000
1998	16000000
1999	19000000
2000	15000000
2001	9000000
2002	10899999.6185303
2003	15600000.3814697
2004	21399999.6185303
2005	24399999.6185303
2006	27399999.6185303
2007	30399999.6185303
2008	37400001.5258789
2009	32299999.2370605
2010	35200000.762939505
2011	42200000.762939505
2012	39299999.237060495
2014	62799999.237060495
2015	51599998.4741211
2016	50500000
2017	60599998.4741211
2018	73699996.9482422
2019	72699996.9482422
2020	18500000