Year	constant 2010 US$
1975	7353.17427309512
1976	8915.34676013714
1977	10372.825491054
1978	11138.1686145893
1979	12146.6573403071
1980	12706.6960007687
1981	12812.0124247599
1982	13423.7234260943
1983	14056.6579814247
1984	15090.9124752791
1985	15636.4846697457
1986	16030.7439933307
1987	16977.7238670902
1988	18251.1865416049
1989	19422.8234015497
1990	20421.1505945601
1991	20046.4749639874
1992	21355.075790782
1993	20991.4783788091
1994	21774.922547768
1995	23194.5078653539
1996	23112.7503163861
1997	23389.2430894556
1998	24516.0844715012
1999	25454.9484090259
2000	26688.0290138294
2001	27445.4612618691
2002	28142.8629955747
2003	28532.2486169351
2004	29568.2018773167
2005	30559.8462834406
2006	31470.9246288539
2007	32378.570110512
2008	32727.135332061
2009	31218.2070993334
2010	30818.4799259532
2011	30163.3139398774
2012	28852.2015079526
2013	27242.2283628513
2014	27182.5024316368
2015	27874.1583101339
2016	29081.816096969
2017	30100.1555860186
2018	30926.4517164312