Year	constant 2010 US$
1961	18056.304588282
1962	19039.6253426197
1963	19687.9651219039
1964	20603.6042435402
1965	21512.12394076
1966	22530.8683855016
1967	22813.1389002354
1968	23569.4514924729
1969	24424.2526267071
1970	24775.1179580582
1971	25010.4194968072
1972	26083.8566474628
1973	27528.2510366164
1974	28037.117551862
1975	28034.6612577856
1976	29294.7065004013
1977	29949.3596336108
1978	30744.9656739007
1979	31571.9446577539
1980	31839.2336333694
1981	32542.600239534
1982	31132.4629484683
1983	31628.1613684896
1984	33182.4100945097
1985	34438.3324000338
1986	34828.6334913562
1987	35772.3057848903
1988	36868.807700778
1989	37052.3845744415
1990	36557.63290815
1991	35353.0202367289
1992	35251.6408091221
1993	35794.0946582376
1994	36995.5021536655
1995	37600.3301219658
1996	37811.7132349717
1997	39039.9851410969
1998	40226.6250882006
1999	41960.2375445554
2000	43724.161759206
2001	44025.5405175941
2002	44863.2160183574
2003	45261.3380639101
2004	46225.3608685198
2005	47257.4721965916
2006	48014.9311967848
2007	48536.5394134496
2008	48497.5601666358
2009	46542.9048681129
2010	47450.3184700703
2011	48466.8509143277
2012	48788.3330342366
2013	49400.4583023845
2014	50309.1598956693
2015	50279.5858384833
2016	50263.8343255264
2017	51150.7546213588
2018	51382.4227903107