Year	constant 2011 PPP $
1991	20594.83984375
1992	15645.443359375
1993	12015.125
1994	9573.25
1995	8344.90234375
1996	8412.16015625
1997	8887.7001953125
1998	9765.279296875
1999	10447.021484375
2000	11524.5263671875
2001	12277.3330078125
2002	13154.9638671875
2003	14182.9501953125
2004	15054.755859375
2005	18422.955078125
2006	24047.181640625
2007	29335.7890625
2008	31550.662109375
2009	33608.58984375
2010	34437.38671875
2011	33733.015625
2012	33784.6484375
2013	35098.76953125
2014	35120.0703125
2015	34904.54296875
2016	33202.328125
2017	32779.484375
2018	33306.6953125
2019	34190.171875