Year	constant 2010 US$
1970	4748.98601934946
1971	4977.18693191332
1972	5203.98505797703
1973	5525.93716808285
1974	5764.35961117904
1975	5842.42347939807
1976	6027.05067942666
1977	6180.08759008092
1978	6251.27805524222
1979	6508.87508836001
1980	6734.38808370714
1981	6565.68710193679
1982	6269.58494226332
1983	5963.75859751998
1984	6057.89712055246
1985	6179.55357321717
1986	6359.11648282614
1987	6477.78792955299
1988	6421.83724366419
1989	6622.24739880064
1990	6346.39381729841
1991	6484.96584876443
1992	6536.7103713475
1993	6663.19682122683
1994	6810.73372692316
1995	6853.16954258012
1996	6943.88041481853
1997	7179.20984416179
1998	7183.77713925295
1999	7070.95764593161
2000	7299.62187006877
2001	7237.20533261456
2002	7128.51806103851
2003	7132.92846630822
2004	7447.80287774516
2005	7671.11178277064
2006	8044.84991361841
2007	8429.51139132657
2008	8662.89990078018
2009	8389.48448506177
2010	8745.85696494153
2011	9028.13306784109
2012	9211.31075860832
2013	9391.56483905156
2014	9392.78606714704
2015	9313.43007784266
2016	9187.25714278826
2017	9244.52867735243
2018	9278.55193602261