Year	constant 2015 US$
1960	6052999197.199511
1961	8008957694.275573
1962	7947261930.687677
1963	9294093048.532616
1964	10810562206.18485
1965	10766927898.925722
1966	11203985121.339457
1967	13090379332.000284
1968	12370700142.373209
1969	13367993312.750492
1970	14953669560.24026
1971	11722947120.397837
1972	11710070802.492916
1973	5808719036.97947
1974	3639905828.9807634
1975	3245870575.6640134
1976	4467255294.907327
1977	2471585077.4654527
1978	3921335855.0061398
1979	4351245337.292255
1980	5806227770.888953
1981	2757290627.2657046
1982	3016599260.840726
1983	2891488145.1679673
1984	2704459685.15134
1985	2900314938.3268137
1986	2779703754.223318
1987	2938196583.3004975
1988	3158347147.6508875
1989	3633587660.584512
1990	3971973075.456628
1991	3375484239.441904
1992	3078756780.599086
1993	4230793891.276652
1994	3972246595.4821043
1995	5894670757.74757
1996	6726382901.507459
1997	6930946745.167526
1998	7240827339.986291
1999	7407770246.738598
2000	8165875867.933931
2001	9215078956.343647
2002	8768385013.814747
2003	9518042329.894875
2004	17584534401.079945
2005	24277698233.758987
2006	28693920483.783016
2007	33280940694.13155
2008	32648192627.051983
2009	31799452263.567474
2010	32017741187.606037
2011	41351861974.24546
2012	45701482043.99849
2013	46258195353.8685
2014	46798640890.56373
2015	48297463387.433014
2016	44872263008.57199
2017	47189556421.41531
2018	58484366239.84889
2019	58779996002.81296
2020	52073455942.55873
2021	60022959386.40149
2022	78739970649.3639
2023	71044199326.34178