Year	constant 2010 US$
1975	1433.86072840373
1976	1527.54999241445
1977	1645.74275110891
1978	1809.4343852716
1979	1952.76470916306
1980	2023.78671337283
1981	2279.75289531976
1982	2453.81763500309
1983	2566.16432699912
1984	2564.75067455189
1985	2631.78752942341
1986	2753.64451372065
1987	2846.67009368692
1988	3435.58483583358
1989	3657.08287344542
1990	4018.53618357331
1991	4367.91602912608
1992	4413.27964993328
1993	4553.82496829873
1994	4128.09979614978
1995	4494.3652243487
1996	4437.01057326335
1997	4809.15363429488
1998	4967.51732536186
1999	4968.56821022044
2000	4886.46405575076
2001	4996.63448231851
2002	4695.38842384881
2003	5014.50142870567
2004	4988.50695043183
2005	5211.43069706577
2006	5572.50783827951
2007	5973.65029927617
2008	6236.31838920688
2009	5893.17350456605
2010	6158.25439134932
2011	6820.2867611653
2012	7083.02099659873
2013	7447.25386522922
2014	7686.04246157275
2015	7489.82881907461
2016	7460.50847809752
2017	7578.46731244531
2018	7751.17000055873