Year	constant 2010 US$
1981	1721.94344443542
1982	1568.29110782236
1983	1363.62676082415
1984	1311.5945920112
1985	1349.61964760664
1986	1306.13727744804
1987	1302.86272140312
1988	1392.15067102732
1989	1346.32890248265
1990	1457.89261286543
1991	1428.66805352129
1992	1443.93603648845
1993	1355.53377258375
1994	1317.6623541344
1995	1299.75413868662
1996	1323.15503781765
1997	1333.30307730873
1998	1328.80934144068
1999	1326.91556694038
2000	1279.85387720433
2001	1362.48987925604
2002	1530.24363964208
2003	1583.37059878003
2004	1673.89361716015
2005	1728.33477317968
2006	1885.51506109479
2007	1903.69321577323
2008	1980.10900284289
2009	2069.61839112517
2010	2169.32871437713
2011	2228.54740925673
2012	2270.5645151557
2013	2362.30920504433
2014	2486.49404170419
2015	2507.34864844269
2016	2414.98339960695
2017	2354.66768825245