Year	constant 2011 PPP $
1991	23030.724609375
1992	23805.341796875
1993	24039.611328125
1994	23937.107421875
1995	23307.03125
1996	23635.306640625
1997	24531.16796875
1998	25622.63671875
1999	25970.533203125
2000	25907.689453125
2001	25376.87109375
2002	25264.10546875
2003	25558.75390625
2004	26637.884765625
2005	27759.087890625
2006	29807.275390625
2007	32218.994140625
2008	33749.65625
2009	34187.1328125
2010	36062.87890625
2011	39511.390625
2012	41262.515625
2013	42563.88671875
2014	44281.375
2015	45779.7578125
2016	46944.01171875
2017	48018.62109375
2018	49791.93359375
2019	51613.6328125