Year	current US$
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	3300000.07152557
1988	6200000.10728836
1989	23850000.4261732
1990	92520000.81166631
1991	141739997.535944
1992	246260001.663119
1993	98169999.6460229
1994	85010002.19024721
1995	90510001.1862814
1996	72649997.9943037
1997	100720000.32477099
1998	133880000.32305701
1999	63099999.1893768
2000	36109999.4406104
2001	90639998.6259639
2002	93600001.4990568
2003	125310000.594705
2004	208620000.064373
2005	319229995.60833
2006	464539998.330176
2007	386770001.18047
2008	596320003.876463
2009	589699996.747077
2010	462639988.780022
2011	405860007.762909
2012	92620001.2043118
2013	88229999.88496299
2014	61720000.6041676
2015	23900000.289082497
2016	63119997.9186058
2017	93439998.164773
2018	73230002.5522709
2019	77340001.1956692
2020	37270000.9346008
2021	68120000.526309
2022	68439999.52077866