Year	constant 2021 US$
1960	1495450012.20703
1961	2724199951.17188
1962	2783170043.94531
1963	2671000000
1964	1798749938.9648402
1965	1800640014.64844
1966	2226580017.08984
1967	1418500011.44409
1968	1166010009.76563
1969	1204629974.36523
1970	836259963.989258
1971	1147909985.5423
1972	1371419998.16895
1973	961379974.365234
1974	419000000
1975	291400001.525879
1976	634419990.539551
1977	315699995.04089403
1978	308660003.66210896
1979	1384719985.96191
1980	2210519989.01367
1981	1785839942.93213
1982	1561530038.83362
1983	887660007.476807
1984	601659970.283508
1985	505530004.501343
1986	743069992.06543
1987	657120018.005371
1988	484210008.621216
1989	313480004.806072
1990	2896699946.898969
1991	7005589991.01258
1992	5888609990.9544
1993	8575130137.443541
1994	7891880096.435551
1995	7660339969.63501
1996	7302600006.10351
1997	6776369959.354401
1998	8125130015.37323
1999	10563209778.30886
2000	10364699833.86994
2001	10023029980.659481
2002	12021859940.05203
2003	8621780008.88229
2004	8783410033.255821
2005	5471499998.092649
2006	6623670017.24243
2007	5889950017.92908
2008	6784389982.22351
2009	7551289930.34363
2010	6987559970.85571
2011	9645739979.74396
2012	9681869970.79849
2013	8457730035.066599
2014	9711700085.63995
2015	9148160010.33783
2016	10493259958.267199
2017	10275830095.2911
2018	8221490032.196039
2019	7484080069.54193
2020	10809940140.724201
2021	9199500044.22665