Year	constant 2011 PPP $
1991	39055.046875
1992	38312.7578125
1993	34325.7421875
1994	33619.359375
1995	31828.18359375
1996	32518.966796875
1997	33565.37890625
1998	33474.15234375
1999	33694.05078125
2000	32745.330078125
2001	33285.4921875
2002	33787.87109375
2003	34885.65625
2004	36966.49609375
2005	37890.05859375
2006	38549.15625
2007	39295.7578125
2008	40033.6171875
2009	40768.62890625
2010	41337.5
2011	43135.36328125
2012	43837.73828125
2013	43695.3203125
2014	43360.4453125
2015	41874.05078125
2016	39439.9296875
2017	39201.78515625
2018	39626.9921875
2019	40569.56640625