Year	current US$
1970	1299999.95231628
1971	3100000.1430511503
1972	7359999.65667725
1973	13279999.7329712
1974	14360000.6103516
1975	27100000.3814697
1976	28369998.931884803
1977	26829999.9237061
1978	22780000.6866455
1979	42330001.8310547
1980	65099998.474121094
1981	78250000
1982	85980003.3569336
1983	92590003.9672852
1984	107909996.032715
1985	127580001.831055
1986	186539993.28613302
1987	262519989.013672
1988	378709991.455078
1989	434540008.544922
1990	491820007.324219
1991	599339965.820313
1992	430559997.558594
1993	249259994.506836
1994	232950012.20703098
1995	241839996.33789098
1996	239970001.220703
1997	225309997.55859402
1998	238389999.38964802
1999	270399993.89648396
2000	239520004.272461
2001	244009994.506836
2002	273680023.19335896
2003	335269989.013672
2004	433720001.220703
2005	601119995.117188
2006	455820007.324219
2007	583669982.910156
2008	691630004.882813
2009	789980041.503906
2010	836830017.089844
2011	838289978.027344
2012	793679992.675781
2013	821150024.414063
2014	936869995.117188
2015	697450012.207031
2016	638090026.855469
2017	597869995.117188
2018	475850006.10351604
2019	601549987.792969
2020	655020019.53125
2021	702169982.910156
2022	301639998.9165365