Year	constant 2011 PPP $
1991	27980.0234375
1992	23017.435546875
1993	22861.189453125
1994	23208.68359375
1995	25716.392578125
1996	27457.912109375
1997	30611.7890625
1998	32019.3671875
1999	32981.3046875
2000	37216.2109375
2001	40030.5625
2002	41902.98828125
2003	44131.81640625
2004	46371.75390625
2005	49828.95703125
2006	52129.22265625
2007	55463.08984375
2008	52524.62890625
2009	49553.85546875
2010	53124.3515625
2011	53986.953125
2012	55064.53515625
2013	55527.2421875
2014	56739.73046875
2015	56299.2578125
2016	57296.9140625
2017	59057.49609375
2018	61342.55859375
2019	64494.19140625