Year	constant 2011 PPP $
1991	19590.7734375
1992	19867.74609375
1993	19490.32421875
1994	20157.38671875
1995	20724.884765625
1996	21350.0234375
1997	21566.283203125
1998	21860.01953125
1999	21822.931640625
2000	22305.1875
2001	20695.123046875
2002	20898.5859375
2003	20734.296875
2004	21714.369140625
2005	22030.1015625
2006	23283.90234375
2007	24672.0390625
2008	24902.056640625
2009	24100.6171875
2010	24027.041015625
2011	24696.56640625
2012	24857.12109375
2013	25616.490234375
2014	26196.115234375
2015	26407.390625
2016	26839.2265625
2017	27145.826171875
2018	27491.767578125
2019	28080.451171875