Year	constant 2011 PPP $
1991	17667.61328125
1992	17372.712890625
1993	18016.705078125
1994	17343.369140625
1995	18634.943359375
1996	19952.216796875
1997	19901.123046875
1998	20269.884765625
1999	20755.849609375
2000	22438.048828125
2001	23992.232421875
2002	24951.052734375
2003	26016.033203125
2004	27171.01953125
2005	28254.16015625
2006	28540.79296875
2007	30302.28125
2008	30364.650390625
2009	28530.98828125
2010	28431.759765625
2011	30190.326171875
2012	31023.62890625
2013	29977.126953125
2014	30044.419921875
2015	30304.173828125
2016	32430.646484375
2017	32919.93359375
2018	33347.13671875
2019	33837.3203125