Year	constant 2011 PPP $
1991	21331.1484375
1992	17535.90625
1993	17198.47265625
1994	14191.0703125
1995	13251.3642578125
1996	14059.1103515625
1997	12198.740234375
1998	12900.908203125
1999	14747.1845703125
2000	15017.912109375
2001	15111.8720703125
2002	14703.8115234375
2003	14748.8896484375
2004	15013.2373046875
2005	16433.662109375
2006	17655.984375
2007	18922.923828125
2008	20931.361328125
2009	21613.072265625
2010	22970.130859375
2011	25727.111328125
2012	28012.947265625
2013	30342.814453125
2014	32874.16015625
2015	34381.3515625
2016	36037.3203125
2017	37755.37890625
2018	39540.375
2019	41446.1484375