Year	constant 2010 US$
1976	1686.9320939519
1977	1716.00957945655
1978	1698.46086678591
1979	1643.65598815618
1980	1557.60368957604
1981	1524.56764947389
1982	1419.90548034795
1983	1342.81979914933
1984	1314.42933830261
1985	1258.66602976388
1986	1191.02334595622
1987	1212.32662634629
1988	1230.93032616345
1989	1254.83140265769
1990	1291.21705332122
1991	1339.50617425911
1992	1348.85804407457
1993	1376.88530120823
1994	1418.90560666796
1995	1454.27805156923
1996	1490.51940634402
1997	1538.03333723473
1998	1592.52191994967
1999	1561.2813510245
2000	1565.19813285022
2001	1562.88079111343
2002	1571.54315837279
2003	1565.34848710864
2004	1588.86286609005
2005	1637.22270654336
2006	1691.97094054788
2007	1734.85468144559
2008	1819.59892784383
2009	1839.10035068239
2010	1869.46868895585
2011	1922.93463014223
2012	1960.63780756046
2013	2058.1757944282
2014	2169.84466520276
2015	2289.94048706266
2016	2390.29838138812
2017	2428.60029608544
2018	2505.28908025