Year	constant 2015 US$
1975	246006961.89873642
1976	296340099.60230017
1977	336315404.9280825
1978	343397129.6088753
1979	366263804.53991073
1980	427815184.0189145
1981	488208333.39828867
1982	545722460.4989742
1983	606578907.230906
1984	691923529.7719853
1985	777797634.9941688
1986	899047231.1054758
1987	1156305540.7731457
1988	1356579152.7359903
1989	1476008692.0046365
1990	1581516388.86941
1991	1629596564.605991
1992	1807894066.5593987
1993	1987299504.7620091
1994	2087377568.4319422
1995	2175314454.9127884
1996	2201001492.9208817
1997	2419181757.1324763
1998	2579552898.380966
1999	2630661063.602403
2000	2646881650.6520896
2001	2608723375.4189386
2002	2744417943.488717
2003	2777900571.3769336
2004	2976890860.5396523
2005	2788692128.907709
2006	2678354624.520143
2007	2906134476.031043
2008	3171207026.0923824
2009	3459964312.1627655
2010	3405014296.8821397
2011	3675858183.5179887
2012	3931921841.178492
2013	4169643539.4275804
2014	4303684597.950772
2015	4281047610.6605673
2016	4458760093.628179
2017	4309998574.632894
2018	4404232057.694136
2019	4856705149.882689
2020	5051585602.102608
2021	5252341195.340225
2022	5386031947.199351
2023	5602220499.36977