Year	constant 2010 US$
1991	16371.7641051458
1992	15304.4146297887
1993	13641.7920108532
1994	13216.1141486258
1995	13223.3686524454
1996	13478.2369088015
1997	13576.7821026379
1998	13635.3990653992
1999	13831.7449125298
2000	14391.5559956839
2001	14372.9412786126
2002	14809.6524122136
2003	15369.9384935674
2004	15858.4241566996
2005	16578.6909973993
2006	17457.4820334441
2007	18567.1491944671
2008	19069.8783844418
2009	18283.3542241664
2010	18580.8071329438
2011	19273.0451314037
2012	19930.8120436954
2013	20471.740876806
2014	20657.8057259254
2015	20556.3067378192
2016	20575.6495356919
2017	19962.6491875327
2018	20572.5296895296