Year	current US$
1987	3299999.95231628
1988	899999.976158142
1989	32299999.2370605
1990	17530000.6866455
1991	11840000.1525879
1992	4769999.98092651
1993	4920000.07629395
1994	2740000.00953674
1995	15350000.3814697
1996	13250000
1997	9550000.19073486
1998	13859999.6566772
1999	12659999.8474121
2000	10579999.923706101
2001	9659999.84741211
2002	13319999.6948242
2003	14510000.2288818
2004	16569999.6948242
2005	15220000.2670288
2006	17569999.6948242
2007	23989999.7711182
2008	45830001.8310547
2009	37720001.220703095
2010	42810001.373291
2011	19649999.6185303
2012	7730000.01907349
2013	13350000.3814697
2014	5429999.82833862
2015	125629997.253418
2016	2117629882.8125
2017	7019999.98092651
2018	8750000
2019	8310000.419616699
2020	6460000.03814697
2021	6429999.82833862
2022	10909999.8474121