Year	constant 2010 US$
1967	735.694537294992
1968	774.206151296016
1969	813.482653857051
1970	824.966190831908
1971	850.283322823236
1972	865.16297556006
1973	833.203295181175
1974	907.171114082153
1975	1005.64743193011
1976	920.678750708176
1977	883.808646285081
1978	1238.35793151827
1979	1315.68401421377
1980	1110.08281936241
1981	1356.44973678676
1982	1462.33517431711
1983	1526.31624053094
1984	1630.49405317713
1985	1714.18377947949
1986	1804.72902487616
1987	1711.70948139332
1988	1543.65167472103
1989	1449.8355256825
1990	1290.91216287033
1991	1180.15507021732
1992	1124.37031433264
1993	1007.51395991519
1994	994.46844783367
1995	999.395629866612
1996	1014.69620827512
1997	1038.50823259276
1998	1070.5604588635
1999	1090.20434723267
2000	1077.93417392865
2001	1086.61001109402
2002	1113.30731412709
2003	1161.12135630303
2004	1222.02842968658
2005	1208.12547722675
2006	1233.95307628298
2007	1247.49587426102
2008	1264.51237336674
2009	1271.82890956762
2010	1272.28342605634
2011	1288.54615400469
2012	1304.01913407728
2013	1332.16948012783
2014	1388.55420125634
2015	1419.95203826203
2016	1442.51138690131
2017	1451.9046855431
2018	1470.38522902402