Year	current US$
1970	28618246128.2724
1971	31660039477.3167
1972	32022784369.9041
1973	49389881397.242
1974	67434813229.8747
1975	49004334908.8361
1976	46934527617.4008
1977	51918936020.2245
1978	52792176039.3502
1979	61309526638.6143
1980	67351446461.7075
1981	68072066672.1395
1982	71468801502.8316
1983	88749029001.2404
1984	67519189537.0821
1985	75376132220.508
1986	97618879083.8828
1987	97003097356.258
1988	110583378490.395
1989	62012185532.1377
1990	120635727962.181
1991	166898435446.466
1992	204024866060.271
1993	210926349278.954
1994	227106385135.324
1995	223528398630.206
1996	236983938646.198
1997	253376657567.304
1998	257718078198.383
1999	240031171641.903
2000	238399675554.473
2001	224968752618.712
2002	75590438007.3152
2003	103448403705.699
2004	124005526472.631
2005	148938243056.375
2006	193236491249.098
2007	243687486346.74
2008	305021774544.565
2009	278180375836.102
2010	353652788044.292
2011	442536187080.218
2012	454254301661.785
2013	460395962371.796
2014	438031034121.621
2015	507308748132.43
2016	473643779848.176
2017	554002069337.642
2018	439587197173.017
2019	370477828048.014
2020	327236387986.867
2021	411983137959.54