Year	constant 2010 US$
1981	1146.66484920018
1982	1069.27110254863
1983	966.22244766088
1984	922.975227659638
1985	895.456694831873
1986	817.565724136093
1987	775.783487299113
1988	793.021178764563
1989	781.630701437346
1990	785.059607139211
1991	806.409022357262
1992	788.942566773595
1993	765.414155486814
1994	754.383680666924
1995	771.821944888757
1996	798.878345335608
1997	809.035096040136
1998	798.188701512946
1999	808.820439721006
2000	826.079936172333
2001	869.108088281092
2002	909.61363535068
2003	940.952710170126
2004	1000.18012310649
2005	1026.86980480443
2006	1092.22490763989
2007	1152.6125953057
2008	1098.18803398312
2009	1159.44596963298
2010	1184.74186697804
2011	1172.53132142307
2012	1224.0833486493
2013	1233.55585683109
2014	1271.1007870466
2015	1277.51271587619
2016	1230.19272470545
2017	1213.74645365959