Year	current US$
1977	19999.9995529652
1984	9739999.77111816
1985	11670000.076293899
1986	8810000.4196167
1987	7690000.05722046
1988	7349999.90463257
1989	8109999.65667725
1990	8340000.152587891
1991	8899999.61853027
1992	9399999.61853027
1993	10810000.4196167
1994	11310000.4196167
1995	4869999.88555908
1996	7239999.771118159
1997	9239999.77111816
1998	8619999.88555908
1999	8520000.45776367
2000	4449999.80926514
2001	4179999.8283386203
2002	1750000
2003	1480000.01907349
2004	1480000.01907349
2005	1070000.05245209
2009	930000.007152557
2010	389999.98569488496
2012	1398000.00190735
2015	1825162.52994537
2018	2460399.62768555
2021	2677609.92050171
2022	1837100.0289917002