Year	constant 2010 US$
1986	15669.6160398263
1987	18427.6115299095
1988	22134.0172712515
1989	24837.9509579621
1990	25357.7869437251
1991	26329.3131412118
1992	26401.968740042
1993	26663.2077602359
1994	27272.3100411519
1995	26705.1809964158
1996	26087.7758122111
1997	27190.5011823334
1998	27151.9241038764
1999	26954.4045087697
2000	28417.3842120132
2001	26966.0547913068
2002	25508.3025249991
2003	25469.2874132699
2004	27005.5295318108
2005	26979.8853627251
2006	27046.2239557508
2007	27427.5782618678
2008	27365.9309649898
2009	24463.6922486895
2010	23512.6025956397
2011	24233.0010815022
2012	23781.2572983852
2013	24635.764947531
2014	24697.4940275196
2015	24452.606574011
2016	24277.4067939156
2017	24485.0832823881