Year	constant 2015 US$
1960	412942177.234306
1961	408627211.955061
1962	455228836.97794974
1963	587020205.0893848
1964	526672333.53303814
1965	538261097.4268737
1966	655073371.7671164
1967	703894121.7827102
1968	920443736.4582888
1969	1011427861.4937528
1970	1157828469.1874514
1971	1248072885.8802748
1972	1464622500.5558534
1973	1577859517.9594917
1974	1710082382.577721
1975	1676364011.0394847
1976	1767224851.3159583
1977	1911344691.7343028
1978	2101326448.6920283
1979	2169811111.999813
1980	2075559941.6875064
1981	2306348941.7740283
1982	2180475240.474152
1983	2151873184.910884
1984	2394497518.303571
1985	2298890216.1177993
1986	2382292330.7380433
1987	2881348886.409958
1988	3093706820.688541
1989	3590975747.8217196
1990	3874715536.1966577
1991	4219666189.0887055
1992	4939871231.106281
1993	5339744399.037693
1994	5550198243.765778
1995	6161740511.41942
1996	6547253387.887902
1997	7116567046.539184
1998	8145541922.414449
1999	8562473312.634996
2000	8754312100.226183
2001	8903312092.899158
2002	9141929482.377914
2003	9660370922.243473
2004	10663440250.267286
2005	11304515352.278278
2006	12213567644.530718
2007	13132386503.735298
2008	13417629728.297014
2009	12282263088.653183
2010	13427885345.463703
2011	14374296689.816408
2012	15174121722.742947
2013	15676617846.412596
2014	16454857837.580582
2015	16930125461.643381
2016	18524481408.48626
2017	19812845103.008965
2018	20781883589.64902
2019	21667497333.877243
2020	19363623473.412334
2021	22449008066.83001
2022	25413836265.79248
2023	28072173844.918617