Year	constant 2021 US$
1960	8364610094.24925
1961	9218559952.02065
1962	8125139893.5318
1963	7297529980.03364
1964	6473670081.85387
1965	5396940017.96842
1966	4926999963.58901
1967	3690830049.96926
1968	3330820048.61534
1969	3441059986.17411
1970	6348399954.2594
1971	5848469939.76831
1972	5840169996.73843
1973	11010560084.8049
1974	15804859766.602499
1975	21667529676.198997
1976	21760789558.351
1977	23877120582.4614
1978	21387330286.3836
1979	22029800568.4912
1980	21779240294.4565
1981	21332889931.798
1982	17828619874.0005
1983	15814159974.336601
1984	15127889700.532
1985	16848089796.5431
1986	13835809889.8381
1987	12053680273.771301
1988	9084440016.74652
1989	9178240134.2392
1990	20999369674.2058
1991	20025889650.344803
1992	13728500113.4872
1993	10667000121.5935
1994	12121570066.6904
1995	7600919929.98123
1996	11298060028.791473
1997	9679899794.101719
1998	10420390116.69159
1999	8905449864.86435
2000	8298060132.02667
2001	7916219974.756239
2002	8174810043.8118
2003	11654619986.05726
2004	13768760157.585146
2005	33496259838.1042
2006	19693090065.002403
2007	19130580173.492397
2008	24111000190.7349
2009	14146859954.834002
2010	12515900031.089802
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