Year	current US$
1978	298716.1577
1979	596723.7353
1980	773624.301
1981	955742.4784
1982	712219.4171
1983	1096014.738
1984	3254174.232
1985	277999.5501
1986	85516.572
1987	70096.1947
1988	63699.1858
1989	157212.2127
1990	310000.0024
1997	800000
1998	500000
1999	560000
2000	463800
2001	553670.314438522
2002	797330.560841438
2003	1821460.08788983
2004	1100000
2005	1500000
2006	1600000
2007	2000000
2008	3000000
2009	2000000
2010	6363257.45420498
2011	6881334.4868734
2012	6358889.79036748
2013	26566722.9242651
2014	26827848.8055731
2015	19980196.8917738
2016	18044840.5563265
2017	18192067.2275615
2018	17776130.4760228
2019	11114429.3726563
2020	8620359.24783976
2021	10591491.6383431
2022	10143926.646532
2023	8153011.9516613