Year	current US$
1970	9930000.036954874
1971	9020000.040531162
1972	8450000.226497654
1973	10549999.594688412
1974	13889999.866485585
1975	14120000.023394829
1976	15450000.22649766
1977	16730000.052601106
1978	28160000.119358294
1979	22939999.84115362
1980	16880000.049248334
1981	27330000.359565053
1982	22799999.97653065
1983	31599999.602884065
1984	43640000.83878641
1985	37309999.40074981
1986	46709999.72149734
1987	52239998.84724617
1988	74309998.13601373
1989	66820000.00774861
1990	57679999.4781613
1991	56199999.25047165
1992	44739999.465644374
1993	35110000.28625134
1994	26930000.009015165
1995	17799999.85359608
1996	10979999.965056773
1997	14960000.49449503
1998	9159999.772906307
1999	11459999.917075038
2000	10059999.814257033
2001	26510000.44308606
2002	14749999.960884456
2003	20480000.55551529
2004	23569999.46013093
2005	36140000.58174133
2006	11990000.08404254
2007	43180000.0667572
2008	9640000.078827146
2009	32380000.35285951
2010	9979999.942705033
2011	11080000.10438264
2012	8070000.052452087
2013	5880000.075325372
2014	10990000.180900099
2015	10970000.335946675
2016	7139999.881386759
2017	5680000.089108942
2018	12579999.655485157
2019	8519999.809563154
2020	11569999.99284745
2021	17219999.909400932
2022	29520000.308752105