Year	constant 2021 US$
1960	29982679687.5
1961	36755269531.25
1962	36284679687.5
1963	38030628906.25
1964	38002890625
1965	39953820312.5
1966	39513140625
1967	40218308593.75
1968	35262000000
1969	33658691406.25
1970	37207730468.75
1971	39779500000
1972	38167070312.5
1973	45598210937.5
1974	56638910156.25
1975	63253011718.75
1976	58183957031.25
1977	54722941406.25
1978	66587242187.5
1979	66237570312.5
1980	74518718750
1981	74015343750
1982	69194125000
1983	65246421875
1984	69707796875
1985	72426187500
1986	69745789062.5
1987	68459992187.5
1988	68724718750
1989	71123273437.5
1990	82555189331.05469
1991	87530399902.34375
1992	81416541503.90625
1993	79465166503.90625
1994	81407250488.28125
1995	72936431640.625
1996	68872462402.34375
1997	67581239257.8125
1998	72500550781.25
1999	75192910644.53125
2000	74373127929.6875
2001	79741065185.54688
2002	91382376953.125
2003	93012285888.67188
2004	95968070068.35938
2005	122570765625
2006	116947960937.5
2007	109520468750
2008	121769468750
2009	125490351562.5
2010	128430484375
2011	131466546875
2012	128553750000
2013	143564078125
2014	153172578125
2015	154597796875
2016	167453437500
2017	170794234375
2018	167082015625
2019	165865156250
2020	192703828125
2021	189745046875