Year	constant 2015 US$
1965	1789.993421997081
1966	1902.9960654979711
1967	2002.2556191147203
1968	2072.582852789258
1969	2151.3558449505376
1970	2387.4681018388255
1971	2421.1417815634422
1972	2464.772102364356
1973	2601.53891669817
1974	2806.253644029282
1975	2991.2100727664306
1976	3150.8572579652873
1977	3345.2071490459716
1978	3572.821359977411
1979	3808.0190588590763
1980	3948.865350795121
1981	4122.876591270079
1982	4169.979244132319
1983	4311.29871587326
1984	4506.668136748219
1985	4688.071865250605
1986	4266.724946373568
1987	4285.87259530389
1988	4479.400182811313
1989	4146.256807981102
1990	3534.032277327824
1991	2768.81016089293
1992	1513.8501740446266
1993	1062.095280802074
1994	966.4195962254845
1995	1029.4805462834745
1996	1187.1232062189954
1997	1354.783522020656
1998	1431.7933606922363
1999	1503.4629877673394
2000	1561.1986763884659
2001	1661.8301910642062
2002	1768.597011688804
2003	1977.4614333874113
2004	2105.0047284379875
2005	2321.6008428516348
2006	2554.8125350391365
2007	2891.13702331846
2008	2970.1585828242805
2009	2887.256079359217
2010	3090.0651366231846
2011	3362.103003196797
2012	3609.7807986259963
2013	3806.5060064905138
2014	3960.3508009190073
2015	4086.6223465964995
2016	4225.091549048057
2017	4442.50744127374
2018	4713.653548453031
2019	4975.811481948139
2020	4659.609253182341
2021	5175.198651858251
2022	5736.304495785975
2023	6086.592688164993