Year	constant 2015 US$
1970	2850.673483641574
1971	2919.608632378166
1972	3032.273070325113
1973	3135.3146809928644
1974	3116.1545185848177
1975	3134.1265173472975
1976	3231.2311750995314
1977	3293.352909309963
1978	3366.5579035386804
1979	3430.8926783480297
1980	3451.248464230047
1981	3437.7389224783374
1982	3428.5267436664863
1983	3473.6218245977307
1984	3528.4606515264445
1985	3594.3687094694187
1986	3675.7799930496026
1987	3733.278109300729
1988	3811.7364352469335
1989	3873.4895056503447
1990	3930.943020732933
1991	3922.5567976057528
1992	3966.646344449071
1993	3985.640104720365
1994	4046.4540417317503
1995	4101.950657600783
1996	4190.394800134482
1997	4270.61373564139
1998	4344.850606315196
1999	4455.389697462644
2000	4587.286403230755
2001	4645.172886867021
2002	4700.779228005417
2003	4769.445370954451
2004	4886.210280650512
2005	5013.382633372333
2006	5130.426218137548
2007	5271.136161544194
2008	5301.267238217465
2009	5223.157351138079
2010	5329.764455311461
2011	5432.416739314142
2012	5497.927577574879
2013	5577.300752609753
2014	5670.554432320158
2015	5769.320080239752
2016	5872.060606337404
2017	6009.004544040359
2018	6135.819352757917
2019	6225.946040526636
2020	5882.223208325662
2021	6263.086862745874
2022	6448.931656660659