Year	current US$
1978	5150000.09536743
1979	3500000
1980	4050000.1907348596
1981	18059999.4659424
1982	14750000
1983	6019999.98092651
1984	8949999.80926514
1985	17209999.084472697
1986	32060001.373291
1987	29350000.3814697
1988	32180000.305175804
1989	30860000.6103516
1990	58619998.9318848
1991	39479999.5422363
1992	40020000.4577637
1993	20569999.6948242
1994	16059999.465942401
1995	13170000.076293899
1996	17040000.915527303
1997	6000000
1998	3329999.92370605
1999	3640000.10490417
2000	3970000.02861023
2001	9859999.65667725
2002	17600000.3814697
2003	20489999.7711182
2004	32169998.168945298
2005	7940000.05722046
2006	20079999.9237061
2007	47819999.6948242
2008	55680000.3051758
2009	44759998.3215332
2010	123349998.47412099
2011	92779998.7792969
2012	89879997.253418
2013	158589996.33789098
2014	92290000.9155273
2015	70440002.44140631
2016	45830001.8310547
2017	34779998.779296905
2018	59830001.8310547
2019	68099998.4741211
2020	161979995.727539
2021	73160003.6621094
2022	41990001.6784668