Year	current US$
1977	2415458.918
1978	917874.3958
1979	676328.4802
1980	579710.1259
1981	676328.4802
1982	289855.063
1983	483091.8014
1984	338164.2401
1985	821256.0415
1986	531400.9786
1987	869565.1889
1988	434782.5944
1989	869565.1889
1990	628019.3329
1991	386473.429951691
1992	736328.502415459
1993	420000
1994	349158.603548394
1995	243603.570311315
1996	1084585.08621588
1997	5237572.52247337
1998	4259554.82092029
1999	3449004.43943337
2000	12556900.7493156
2001	14023477.8978156
2002	16578457.7011039
2003	17266999.8501961
2004	9223744.77019881
2005	16399501.0548882
2006	14131041.5862534
2007	14567672.8423018
2008	21303989.7457363
2009	26549565.2400667
2010	46967151.950651
2011	21832481.8744534
2012	19882145.4031396
2013	23077322.2929238
2014	14253223.3005705
2015	14437634.4110139
2016	29869539.2632146
2017	12461832.148055
2018	8689449.30751725
2019	19080067.1042013
2020	17079651.6319431
2021	14213187.6316244
2022	20498638.9237251