Year	current US$
1970	193377172.778134
1971	239714001.64155
1972	287704587.355316
1973	394462902.01296
1974	332403515.016076
1975	328992309.401346
1976	341040916.818296
1977	434272235.505511
1978	564337264.221493
1979	729901622.877254
1980	871954014.975001
1981	833976234.163202
1982	980031050.203053
1983	1021395444.84416
1984	1228914546.87047
1985	1386024846.29076
1986	1240192317.96205
1987	1571597102.07278
1988	1549767460.99237
1989	1534571874.9283
1990	1357005464.98419
1991	1647010899.6335
1992	1553868418.03693
1993	1739696422.00382
1994	2065060337.17253
1995	2161325054.66082
1996	2004582403.84319
1997	1995846003.7021
1998	2176304322.02093
1999	1828575780.62531
2000	2464002207.16855
2001	3097827689.52612
2002	4070897417.8356
2003	4538057826.26674
2004	4084016994.58184
2005	5136131455.94041
2006	5436352974.07268
2007	6926890414.34587
2008	8925372515.66113
2009	9000732490.65605
2010	9060484132.87312
2011	10058149620.003
2012	11043525232.0922
2013	11293972418.87
2014	10409889757.9363
2015	9794873088.26535
2016	10018718548.0586
2017	10556038644.7824
2018	11068678794.4365
2019	11824459927.3431
2020	11283416356.9243