Year	constant 2015 US$
1970	6469703055510.318
1971	6676934718214.169
1972	6983657878087.992
1973	7351554348462.05
1974	7294163901073.899
1975	7270298392673.221
1976	7561459301855.259
1977	7731768220855.124
1978	8039391763751.928
1979	8270971017570.492
1980	8255853679166.259
1981	8158168934562.547
1982	8234416360713.042
1983	8406876940239.833
1984	8617636654800.785
1985	8848074375737.807
1986	9319444056757.354
1987	9617194041892.293
1988	10045227083948.256
1989	10370646752079.293
1990	10682725770355.752
1991	10863666232342.328
1992	11034955728709.115
1993	10861592904232.984
1994	11119076170538.898
1995	11375497153361.07
1996	11668912505897.094
1997	12076208463099.768
1998	12510348866011.953
1999	12931543020812.062
2000	13409219744501.86
2001	13695853760433.055
2002	13870694578310.193
2003	14144714866741.188
2004	14643708912493.84
2005	15048821164341.82
2006	15592426273073.627
2007	16138774083891.293
2008	16034479582038.035
2009	15312959363207.66
2010	15829386204839.543
2011	16095861997744.764
2012	16086800647092.33
2013	16186984719883.762
2014	16516086399918.91
2015	16849189685974.709
2016	17160872358576.834
2017	17624133345921.16
2018	17973468855365.258
2019	18249345785896.887
2020	17095765662848.91
2021	17953297639683.27