Year	constant 2011 PPP $
1991	26259.25
1992	26425.640625
1993	26737.771484375
1994	26778.931640625
1995	27468.23828125
1996	27883.455078125
1997	28057.921875
1998	27927.861328125
1999	28495.205078125
2000	28585.123046875
2001	28529.310546875
2002	29729.673828125
2003	30770.99609375
2004	31543.11328125
2005	33089.234375
2006	34242.578125
2007	34746.99609375
2008	33513.66015625
2009	33165.6484375
2010	33134.87109375
2011	32519.123046875
2012	32658.5859375
2013	33403.1796875
2014	32581.939453125
2015	31362.27734375
2016	30497.95703125
2017	30097.60546875
2018	29410.51953125
2019	28880.3984375