Year	current US$
1970	12498998.8102843
1971	13897668.2935558
1972	17147129.5596433
1973	19812858.0592073
1974	18845134.4844897
1975	27049286.8276724
1976	30736131.6026057
1977	32546256.1225355
1978	43171802.8412808
1979	56511276.2536868
1980	59173892.8589674
1981	54118446.8885741
1982	43133469.7431445
1983	40358751.6611883
1984	32704932.0848057
1985	39621675.501496
1986	49345472.9864603
1987	48280775.2815933
1988	49968332.8228805
1989	50876643.9315989
1990	62168310.2411005
1991	63460204.7076628
1992	65837165.0396627
1993	56409836.4769946
1994	42609906.4851765
1995	55840772.8796702
1996	58300822.5294259
1997	56451507.1743074
1998	77478613.8508059
1999	92374156.1653184
2000	84715485.9930738
2001	105999700.587195
2002	107070891.756536
2003	141170014.587063
2004	184527105.954815
2005	212635684.036821
2006	239338447.426772
2007	282861044.675292
2008	319073419.123767
2009	341759379.786108
2010	388184367.982694
2011	556455967.250494
2012	517613378.710869
2013	509839309.234914
2014	615120362.510082
2015	479136065.855951
2016	418389294.691795
2017	564989122.620329
2018	659299739.32692
2019	690161806.559566
2020	726217982.395392
2021	825274083.638316