Year	constant 2010 US$
1981	1383.17211231959
1982	1330.25893431257
1983	1247.34198810823
1984	1244.78883640073
1985	1221.14165171976
1986	1200.43823542056
1987	1199.0370878124
1988	1223.95445126092
1989	1213.36476647924
1990	1210.56655476456
1991	1186.30772418652
1992	1163.24761908812
1993	1130.84148608872
1994	1120.37386532925
1995	1121.06956469068
1996	1144.29693432788
1997	1153.72276523696
1998	1150.07651857551
1999	1142.08005941599
2000	1134.14211195036
2001	1158.24733043989
2002	1215.56917465809
2003	1237.80374645754
2004	1278.83457472759
2005	1318.83533528095
2006	1385.93849843915
2007	1424.33024679761
2008	1456.59778017834
2009	1471.83552086656
2010	1499.73694056298
2011	1524.13967483889
2012	1549.30544968786
2013	1564.65345390145
2014	1625.0142303696
2015	1639.84361964939
2016	1614.61380980554
2017	1602.89646645125