Year	constant 2010 US$
1973	7167.26439014416
1974	7114.93908717546
1975	7009.83712890118
1976	8039.20813379924
1977	8848.00115662412
1978	9417.4815930935
1979	9935.66904898865
1980	10586.4536469262
1981	11256.3462026267
1982	11389.2444325483
1983	11849.2338126812
1984	12897.0105729867
1985	12812.8611216121
1986	14039.7233547905
1987	15743.0149372984
1988	16988.3225746007
1989	17186.4732758313
1990	17705.5829594942
1991	18447.9575668512
1992	19392.7480943813
1993	21177.1233755147
1994	21870.5436212964
1995	22104.3792463424
1996	21637.7319659622
1997	22744.1293669219
1998	21702.2698438961
1999	22050.4340624711
2000	23221.673743926
2001	23554.6225725849
2002	23424.2031365636
2003	24682.1530413765
2004	26476.869780434
2005	27846.0742891234
2006	30153.7330058789
2007	32098.1692753546
2008	33421.6577365018
2009	31646.9123366711
2010	33238.9177199875
2011	34804.8110493673
2012	34574.9306570327
2013	35664.4379852053
2014	36449.9015526215
2015	36938.4220677327
2016	37755.6692823057
2017	39607.2676041537
2018	40735.1184020659