Year	current US$
1970	14496156817.2197
1971	16140779840.3846
1972	19681006136.6085
1973	26565974899.4361
1974	28984032571.0247
1975	34455711528.7516
1976	38323165558.3764
1977	42963480934.8914
1978	52315063941.0846
1979	60337138845.1574
1980	59556763767.6351
1981	50703338387.8656
1982	49251921135.1729
1983	49538370563.7216
1984	48187122702.8703
1985	51042349011.1673
1986	72639969616.5703
1987	90165447603.872
1988	94193030612.841
1989	90515054607.9717
1990	110779333306.201
1991	110996103766.807
1992	122698495115.11
1993	115053694882.435
1994	126449184774.812
1995	150679157168.244
1996	152675560467.1
1997	141067814046.465
1998	144980619721.468
1999	145744028837.716
2000	131688969670.51
2001	133220354351.264
2002	144267928718.227
2003	176195503865.872
2004	205483311887.123
2005	218041440805.601
2006	234958421726.456
2007	262026145405.846
2008	286528819230.477
2009	262755539570.007
2010	266917536292.049
2011	286112943895.602
2012	272906753200.778
2013	291638593119.951
2014	303370129066.256
2015	260292323814.975
2016	268041720271.967
2017	283756950145.116
2018	306118322857.902
2019	296347201607.05
2020	304644390687.387
2021	344354581495.784