Year	constant 2011 PPP $
1991	21709.298828125
1992	22821.302734375
1993	22646.939453125
1994	22752.05078125
1995	22646.0859375
1996	23679.68359375
1997	24340.677734375
1998	24974.08203125
1999	26046.13671875
2000	26820.001953125
2001	27344.701171875
2002	27452.513671875
2003	28428.384765625
2004	29795.29296875
2005	30049.921875
2006	30646.658203125
2007	32016.669921875
2008	32709.50390625
2009	33223.00390625
2010	33553.40234375
2011	34400.84765625
2012	34575.9453125
2013	34817.484375
2014	35246.95703125
2015	35438.40234375
2016	35760.91015625
2017	36187.8203125
2018	36730.71875
2019	37379.8046875