Year	current US$
1994	43750000
1995	77669998.1689453
1996	88349998.4741211
1997	84129997.253418
1998	77169998.1689453
1999	77010002.1362305
2000	43299999.237060495
2001	52909999.8474121
2002	37340000.1525879
2003	25159999.8474121
2004	24819999.6948242
2005	21090000.1525879
2006	18920000.0762939
2007	21100000.3814697
2008	31270000.4577637
2009	21750000
2010	14800000.1907349
2011	10720000.2670288
2012	7780000.20980835
2013	6059999.94277954
2014	5480000.01907349
2015	3289999.96185303
2016	2299999.95231628
2017	2309999.94277954
2018	560000.002384186
2019	119999.997317791
2020	109999.999403954
2021	129999.995231628
2022	129999.995231628