Year	constant 2021 US$
1973	5030000.20980835
1974	71449996.9482422
1975	8630000.11444092
1976	1610000.01430511
1977	2970000.02861023
1978	1820000.05245209
1979	7349999.90463257
1980	22770000.4577637
1981	27569999.6948242
1982	39900001.5258789
1983	30629999.1607666
1984	42779998.779296905
1985	47650001.5258789
1986	45110000.6103516
1987	106459999.084473
1988	85930000.3051758
1989	105550003.05175799
1990	94949996.9482422
1991	95379997.253418
1992	87650001.5258789
1993	80720001.2207031
1994	44310001.373291
1995	45180000.3051758
1996	42959999.0844727
1997	37290000.9155273
1998	34869998.9318848
1999	31799999.237060502
2000	38080001.8310547
2001	24319999.6948242
2002	33180000.305175804
2003	28370000.8392334
2004	34959999.0844727
2005	44450000.762939505
2006	29280000.6866455
2007	33020000.4577637
2008	32040000.915527303
2009	32290000.915527303
2010	85419998.1689453
2011	23120000.8392334
2012	14649999.6185303
2013	4480000.01907349
2014	300000.011920929
2015	8569999.69482422
2016	7889999.8664856
2017	7710000.03814697
2018	7139999.8664856
2019	68699996.9482422
2020	6449999.80926514
2021	12770000.4577637
2022	11930000.3051758