Year	current US$
1965	277199889.12004435
1966	330399867.8400529
1967	377999848.8000605
1968	403199838.7200645
1969	425599829.7600681
1970	390039843.98406243
1971	486663783.5651983
1972	603741005.444613
1973	723601688.628731
1974	952069070.2061396
1975	1329163678.4906492
1976	1478519906.8358033
1977	2045951020.0093522
1978	2239204807.8006783
1979	2763726362.8666334
1980	3199813538.441048
1981	3562602005.1294007
1982	4158229452.85175
1983	4416163196.410008
1984	4543541555.485
1985	4804274604.0771
1986	4828679089.454395
1987	4929538546.559823
1988	5435851112.249981
1989	6175049952.515326
1990	7140625000.000001
1991	8392051190.949418
1992	11031356850.715746
1993	8586423841.059603
1994	8429292929.29293
1995	8753283654.103897
1996	8585246268.482244
1997	8081450738.258574
1998	7913215818.556484
1999	8091913998.981653
2000	8101658668.892134
2001	8244696460.829132
2002	9638911007.719288
2003	11010294887.454197
2004	11802171700.033932
2005	12693835616.438356
2006	14110401962.946627
2007	16055155622.172024
2008	19744223072.001427
2009	19581979602.8285
2010	19771324496.61034
2011	22924208001.333435
2012	26210991083.676266
2013	28540599247.50255
2014	28879314888.936523
2015	27720274420.64537
2016	28123996729.960247
2017	29473429701.66474
2018	31861695412.576668
2019	34349977108.866276