Year	constant 2015 US$
1970	13393.702873843946
1971	14621.443936243973
1972	15871.654850564419
1973	16090.757690391518
1974	16391.333722904285
1975	16062.762510835533
1976	16064.740572368126
1977	16134.5478410895
1978	16169.175902384643
1979	16718.213473623924
1980	16154.711983362726
1981	16870.440307990622
1982	17298.519680741487
1983	17993.525974221673
1984	17031.341860954184
1985	16950.103615059554
1986	18150.09686258351
1987	19249.304037359165
1988	20110.840306965376
1989	19681.693903886488
1990	20818.347220808755
1991	21677.127748443858
1992	22533.596597330317
1993	22887.039923236596
1994	23886.95623008863
1995	24731.846454406346
1996	25630.036332124524
1997	26123.884055938444
1998	26799.906191533322
1999	26905.558941796367
2000	27653.719839698944
2001	27614.776476365158
2002	27102.566894947817
2003	26813.39287371285
2004	27500.81541852348
2005	28558.693740410174
2006	29658.985563198432
2007	30750.426886579935
2008	30368.351372202687
2009	30560.019021092365
2010	31617.301824974234
2011	32554.895008030056
2012	32667.320033770156
2013	33790.922094874884
2014	35016.345269509686
2015	35817.027567162506
2016	36977.44093607517
2017	37957.74324728005
2018	38666.31108434231
2019	39719.96410826526
2020	38569.11894399302
2021	41482.80220596092
2022	43655.24845315554