Year	constant 2011 PPP $
1991	18012.7734375
1992	16730.23046875
1993	16386.638671875
1994	15171.033203125
1995	14372.69140625
1996	16045.2744140625
1997	16286.8037109375
1998	16985.9140625
1999	17263.892578125
2000	17929.1875
2001	18520.830078125
2002	19234.609375
2003	20283.828125
2004	22242.40625
2005	23975.314453125
2006	25984.521484375
2007	27807.095703125
2008	30236.896484375
2009	30101.2890625
2010	32264.71875
2011	33952.55078125
2012	34440.12109375
2013	34704.36328125
2014	35284.3046875
2015	33987.125
2016	33254.28515625
2017	34303.828125
2018	35758.046875
2019	37015.5078125