Year	current US$
1965	46199981.520007394
1966	48159980.736007705
1967	48328790.42703319
1968	46799962.56002995
1969	51599958.72003302
1970	55199955.84003533
1971	69778633.3012512
1972	101362003.05910005
1973	134312014.50911954
1974	275333236.8268674
1975	463519976.83844817
1976	749276780.5442966
1977	894036189.9247249
1978	1010423566.878981
1979	1284597857.5564563
1980	1759409669.9478865
1998	7355824447.3342
1999	7349353185.955787
2000	7800357867.360208
2001	8252075162.548764
2002	8778576072.821846
2003	9446521196.358908
2004	10656123537.061117
2005	11533639531.859558
2006	13623217425.227568
2007	16422604421.326397
2008	20035650715.214565
2009	19890165149.544865
2010	25957867360.20806
2011	28685305591.6775
2012	32757087126.13784
2013	35732899869.96099
2014	39224187256.17685
2015	39446293888.16645
2016	40068140442.13264
2017	42063459037.71131
2018	43471521456.43693
2019	44623466319.895966
2020	41768487646.293884
2021	44560243693.10793
2022	51007802340.70221