Year	current US$
1988	3200000.04768372
1989	1629999.99523163
1990	300000.011920929
1991	2859999.89509583
1992	3339999.91416931
1993	7239999.771118159
1994	1049999.95231628
1995	6500000
1996	4460000.03814697
1997	5550000.19073486
1998	3299999.95231628
1999	6010000.228881841
2000	5360000.1335144
2001	7409999.84741211
2002	17950000.762939498
2003	17459999.084472697
2004	11500000
2005	15739999.7711182
2006	12970000.2670288
2007	39090000.1525879
2008	34119998.9318848
2009	44740001.6784668
2010	34689998.626709
2011	35139999.3896484
2012	9060000.4196167
2013	14840000.1525879
2014	8180000.305175779
2015	14760000.2288818
2016	2660000.08583069
2017	2220000.02861023
2018	4590000.15258789
2019	3190000.05722046
2020	9140000.34332275
2021	12800000.1907349
2022	4199999.80926514