Year	current US$
1970	359748011.26364
1971	406726927.338927
1972	456284331.466322
1973	514648846.205148
1974	539219856.801909
1975	548961833.619949
1976	602692756.201206
1977	644878215.340554
1978	701170596.727623
1979	763963192.809758
1980	888258585.327374
1981	1048287477.9319
1982	1112695342.86762
1983	1133053885.77315
1984	1337681361.12479
1985	1374206028.45922
1986	1459432267.55401
1987	1850897376.27793
1988	1995592842.94235
1989	2087142129.23647
1990	2449304958.98984
1991	2699200385.98363
1992	2884228206.8435
1993	3118721036.09235
1994	3219484742.41667
1995	3479142873.52311
1996	3614562896.93129
1997	4145355908.45272
1998	5035674184.24258
1999	5240450244.56577
2000	5654437798.01103
2001	6367976313.98939
2002	6261582838.42795
2003	6721400100.73875
2004	7349862909.35608
2005	8241086672.87363
2006	8051699459.84842
2007	9972956033.86505
2008	10482637145.611
2009	11129748149.669
2010	12185380054.7412
2011	12327245034.9341
2012	12399814348.611
2013	12464687797.6715
2014	12561255326.37
2015	13134333172.5548
2016	13345476669.6746
2017	12883617365.3684
2018	12530271898.0898
2019	13154231611.2039
2020	13693173418.2128
2021	14087979671.492