Year	constant 2011 PPP $
1991	10051.244140625
1992	10164.4833984375
1993	10204.0712890625
1994	9842.8271484375
1995	10010.17578125
1996	10300.0556640625
1997	11148.6025390625
1998	11393.240234375
1999	11566.837890625
2000	12095.4091796875
2001	12569.6806640625
2002	13072.0087890625
2003	13803.4033203125
2004	13994.986328125
2005	14695.7763671875
2006	15771.4755859375
2007	17256.9140625
2008	18318.111328125
2009	18250.01171875
2010	18542.623046875
2011	17671.962890625
2012	17343.052734375
2013	17619.92578125
2014	17561.86328125
2015	17880.80859375
2016	18154.68359375
2017	18326.998046875
2018	18123.533203125
2019	18172.373046875