Year	current US$
1993	37869998.9318848
1994	29729999.5422363
1995	19600000.3814697
1996	33240001.678466797
1997	41060001.373291
1998	31110000.6103516
1999	40880001.0681152
2000	32360000.6103516
2001	26450000.762939498
2002	21989999.7711182
2003	23770000.4577637
2004	25579999.9237061
2005	22870000.8392334
2006	22049999.237060502
2007	19360000.6103516
2008	12609999.6566772
2009	9789999.96185303
2010	14300000.1907349
2011	15569999.6948242
2012	16670000.076293899
2013	16969999.3133545
2014	7110000.1335144
2015	4429999.82833862
2016	4949999.80926514
2017	4590000.15258789
2018	3839999.91416931
2019	4920000.07629395
2020	5889999.8664856
2021	7250000
2022	6500000