Year	current US$
1980	1700000.048
1981	2000000
1982	500000
1983	588888.8836
1984	629629.612
1985	1048148.155
1986	1925925.97
1987	2177777.767
1988	2403703.69
1989	7644444.466
1990	6348148.14814815
1993	4003703.7037037
1994	2574074.07407407
1995	911111.111111112
1996	1677777.77777778
1997	2518518.51851852
1998	3166666.66666667
1999	2333333.33333334
2000	7292592.5925926
2001	8033333.33333334
2002	7761377.77777777
2003	7321751.85185185
2004	7671122.22222222
2005	9562997.57867869
2006	8658340.48479188
2007	9698846.69933528
2008	10750563.8827982
2009	9993318.1291515
2010	10037685.848716
2011	11989084.6533838
2012	12230992.4526599
2013	14793350.5025355
2014	16007746.3881481
2015	19657404.3892593
2016	24507970.4451851
2017	27522306.7851852
2018	24186570.0325609
2019	25297852.0704252
2020	22009006.8758913
2021	20099498.7797447
2022	25947956.8357097