Year	current US$
1972	17360000.6103516
1973	28969999.3133545
1974	21290000.915527303
1975	47049999.237060495
1976	31489999.7711182
1977	65879997.253418
1978	119620002.746582
1979	206330001.831055
1980	215139999.38964802
1981	144979995.727539
1982	215789993.28613302
1983	104199996.94824201
1984	123290000.915527
1985	121480003.35693401
1986	248479995.727539
1987	334200012.207031
1988	341959991.455078
1989	370600006.10351604
1990	373579986.57226604
1991	114980003.35693401
1992	163440002.44140598
1993	185039993.28613302
1994	227600006.10351598
1995	254889999.38964802
1996	174029998.779297
1997	129990005.493164
1998	189050003.05175802
1999	123660003.662109
2000	201619995.117188
2001	125639999.38964799
2002	122720001.22070299
2003	115269996.64306599
2004	38229999.5422363
2005	-1009999.99046326
2006	-7449999.80926514
2007	-6590000.15258789
2008	41130001.0681152
2009	14090000.1525879
2010	24190000.5340576
2011	78199996.9482422
2012	305459991.455078
2013	327269989.013672
2014	307700012.207031
2015	375160003.66210896
2016	461269989.013672
2017	1312660034.17969
2018	1179280029.29688
2019	1139180053.71094
2020	2010209960.9375
2021	1952920043.94531
2022	2283020019.53125