Year	current US$
1971	52931756572.83023
1972	59241482429.4259
1973	75886391077.09209
1974	95005865965.03125
1975	104994231911.85443
1976	113158039044.15701
1977	119498816859.95479
1978	135229145939.07939
1979	152080030628.70172
1980	204340607373.53882
1981	325095733871.8164
1982	297974924750.78937
1983	257054215577.3251
1984	223146198380.26437
1985	202427610103.948
1986	207312806170.29907
1987	232470724121.8275
1988	245098973907.4724
1989	237583753411.98495
1990	268219517692.10236
1991	281935600710.2864
1992	279968843781.8481
1993	260599264279.41388
1994	253377269847.33072
1995	296246885788.67676
1996	308243719608.29346
1997	321759670384.8962
1998	315091114217.9374
1999	322225596055.7702
2000	326378189949.0041
2001	313646971399.0456
2002	343828003723.9306
2003	435290819174.0591
2004	539370297358.00555
2005	628612961599.9742
2006	754557885461.0211
2007	847969267981.2834
2008	928359682154.9111
2009	954837117084.6852
2010	1101587674615.2742
2011	1223509088429.6577
2012	1300143528628.5977
2013	1402987516020.2556
2014	1514415143382.417
2015	1390385613881.9392
2016	1304957284107.3853
2017	1395821094870.2322
2018	1440013108714.1074
2019	1472197972702.0527
2020	1413671526270.3528
2021	1541603141722.073