Year	current US$
1970	446989547.316667
1971	418307500
1972	554012684.6675
1973	610427500
1974	944917500
1975	907223333.333335
1976	928572500
1977	1103697000
1978	1213708235.29412
1979	1599110400
1980	1948129411.76471
1981	1925894736.84211
1982	1914798271.60494
1983	2350836868.3274
1984	2087863308.32196
1985	2303836159.1314
1986	2231968099.87902
1987	2462467440.73749
1988	2394074826.44318
1989	3045181210.0814
1990	3392504101.27963
1991	3990598957.48322
1992	4607596071.73356
1993	4937636408.60747
1994	6039966731.09495
1995	7019187193.2119
1996	7610569603.80095
1997	7857929476.77594
1998	7044128457.1361
1999	7775698483.46499
2000	7641228439.31012
2001	8216987392.25335
2002	7721216524.12512
2003	7995330918.13972
2004	7916193542.30253
2005	8182048228.35753
2006	8866877442.18769
2007	9797252915.55707
2008	11659600184.0301
2009	11054783750.6803
2010	12520223940.5184
2011	14137484498.4398
2012	13545731048.7673
2013	15811498081.5371
2014	16536284828.0895
2015	16155201046.349
2016	17084171415.2345
2017	19549172398.5375
2018	20444293938.9853
2019	22230544957.8554
2020	22752468918.832
2021	26726547893.8104