Year	constant 2021 US$
1960	7378940098.76251
1961	8332859924.31641
1962	7372999895.5726595
1963	6379879999.39919
1964	5617930065.15503
1965	4447320011.04951
1966	4010799980.16357
1967	3108130050.65918
1968	2797130042.41884
1969	2984040002.6738596
1970	5747409959.79309
1971	5230589933.3953905
1972	5201019985.19897
1973	9831820082.17275
1974	14321389738.082901
1975	19115529706.0013
1976	18106309486.3892
1977	19559930469.5129
1978	17997380174.636803
1979	17423880409.2407
1980	18331130279.0642
1981	18110699987.6499
1982	14873689821.243301
1983	11728240088.462801
1984	11435939742.2075
1985	12176639866.8289
1986	9296899981.54342
1987	9224290157.318121
1988	6686100027.08435
1989	6918920036.31592
1990	18206529789.9246
1991	16911189754.4861
1992	10069680116.1766
1993	8163660056.114201
1994	9674970086.57455
1995	6817199949.74136
1996	7410299999.23706
1997	7456219848.63281
1998	7675870066.64276
1999	7306449923.51532
2000	6875990169.52515
2001	7523429978.370669
2002	6858470056.533818
2003	10750320008.277872
2004	12897130177.497835
2005	33451579837.799103
2006	19613280063.6292
2007	19060960178.375202
2008	24037640190.1245
2009	13999789947.5098
2010	12537360030.174301
2011	14939190162.6587
2012	12801630050.659199
2013	24209900024.4141
2014	30307749977.111797
2015	19700059623.7183
2016	26552760192.8711
2017	27823039657.5928
2018	31660750106.8115
2019	27682929733.2764
2020	28146759796.1426
2021	32078420013.4277