Year	constant 2011 PPP $
1991	40501.71484375
1992	34587.51953125
1993	32558.158203125
1994	29927.646484375
1995	29255.13671875
1996	28568.505859375
1997	30243.49609375
1998	29451.509765625
1999	29518.58984375
2000	31399.77734375
2001	33001.14453125
2002	33700.46484375
2003	36341.8046875
2004	38378.1796875
2005	40208.28125
2006	43237.68359375
2007	45751.890625
2008	47913.421875
2009	45156.25
2010	46807.546875
2011	48744.296875
2012	50108.36328125
2013	51323.66796875
2014	51726.1796875
2015	50663.28125
2016	50668.703125
2017	51812.6953125
2018	53011.71484375
2019	54190.30078125