Year	constant 2015 US$
1970	2078810656.3892608
1971	2257228381.4393964
1972	2366417716.286221
1973	2447944031.4354434
1974	2471498804.196218
1975	2705114928.426994
1976	2852464939.811138
1977	3102955884.0474806
1978	3307991645.830469
1979	3337848095.4837375
1980	3175300325.7759166
1981	3808780965.1339374
1982	4161181624.5010557
1983	4374776471.61579
1984	4667087011.406928
1985	4779471579.108448
1986	4852042901.851612
1987	4770555227.32257
1988	4795598504.51146
1989	4553539110.834352
1990	4390486269.545191
1991	4235652065.7271304
1992	3985063861.1674047
1993	2991783004.0459547
1994	3264623106.2294855
1995	3406044138.390182
1996	4244335735.6928797
1997	4035903774.796633
1998	4268324068.788355
1999	4815577907.806479
2000	5493328278.863994
2001	5295664414.157272
2002	5094482260.596547
2003	5389058991.008991
2004	6415333188.240332
2005	9462597795.062082
2006	9587870201.227345
2007	10910640195.518768
2008	12173279434.850864
2009	12552828171.828173
2010	14284252747.252748
2011	15063607035.821321
2012	15129708220.351076
2013	15393046810.332525
2014	14955926073.926075
2015	14941000000
2016	11992034251.462822
2017	11992034251.462822
2018	11709504995.004993
2019	11171100185.528755
2020	8875683245.3261
2021	8066476808.905378
2022	7870305551.591264