Year	constant 2010 US$
1970	3463.06087347864
1971	3831.58436402156
1972	3884.37500581655
1973	3540.01580427745
1974	3039.27613913936
1975	2355.91122186303
1976	2494.65555877115
1977	2771.87052516214
1978	2927.03996387698
1979	3145.31053047953
1980	3280.19255025382
1981	3437.02599972392
1982	2891.63734023734
1983	2683.56093422539
1984	2543.36517637573
1985	2464.13476109312
1986	2641.26762691418
1987	2877.67051684828
1988	3118.39964296258
1989	3325.39067788678
1990	3417.98408124455
1991	3708.99711939932
1992	4133.50289959942
1993	4367.28902362695
1994	4673.02105025503
1995	5255.62245055246
1996	5527.78959859311
1997	5859.12536777881
1998	6121.10471884716
1999	5952.86215108744
2000	6129.51694499877
2001	6346.10258658982
2002	6440.72197766332
2003	6528.3080890721
2004	6879.64377100009
2005	7356.81078164367
2006	7530.14391472974
2007	7994.01382951053
2008	8098.32704575967
2009	8357.6079180916
2010	9146.42011283422
2011	9741.16380458143
2012	10291.8059361322
2013	10580.6048749491
2014	10743.3563018235
2015	10981.9987951272
2016	11101.0105593252
2017	10956.5385660724