Year	current US$
1970	16210000.069811936
1971	16700000.209733848
1972	25389999.71747399
1973	24980000.104755156
1974	31449999.729171395
1975	59139999.799430326
1976	55880000.55961313
1977	50610000.2359599
1978	87170000.84742902
1979	87029999.78698784
1980	121170000.2681463
1981	114869999.45715067
1982	134629999.52398244
1983	159700000.91381374
1984	166140001.53169033
1985	168670000.5121529
1986	231749998.29381707
1987	285849999.12604684
1988	330360001.878813
1989	323579999.4654953
1990	392900001.0695309
1991	554410001.7715243
1992	518319999.34278417
1993	454100000.197068
1994	509909999.44321805
1995	529310003.4706296
1996	510659999.4990972
1997	401280002.3406744
1998	425089998.8263845
1999	496540000.8615105
2000	421439999.7908622
2001	404739999.49730945
2002	486360000.4203619
2003	633759998.237714
2004	651949999.9266118
2005	859939998.7831712
2006	708590006.0646236
2007	682030003.4936517
2008	744620002.5118887
2009	892280004.0245054
2010	815989999.7729809
2011	1093829999.7728314
2012	1065410004.6493114
2013	1248969994.576648
2014	1347100001.0725112
2015	1373380004.895851
2016	1258200006.5352767
2017	1258009995.5368788
2018	1240289999.2372837
2019	1265799998.7471845
2020	1364020001.9869952
2021	1481590002.8850882
2022	1538279997.2146754