Year	constant 2011 PPP $
1991	20378.619140625
1992	18462.310546875
1993	18718.005859375
1994	19398.845703125
1995	20817.4140625
1996	22071.65234375
1997	20743.0390625
1998	20730.8125
1999	20889.70703125
2000	21805.5078125
2001	23472.91796875
2002	27539.982421875
2003	29532.197265625
2004	32490.5546875
2005	34752.69921875
2006	37123.796875
2007	39832.88671875
2008	43553.7109375
2009	42041.49609375
2010	40367.90625
2011	42216.08984375
2012	42425.453125
2013	44370.55859375
2014	45535.75390625
2015	47864.046875
2016	50563.69140625
2017	52507.85546875
2018	55053.94921875
2019	56805.71484375