Year	constant 2011 PPP $
1991	19830.634765625
1992	19645.529296875
1993	19486.390625
1994	19708.814453125
1995	19586.16796875
1996	19392.64453125
1997	19659.09375
1998	19044.236328125
1999	17809.794921875
2000	17618.166015625
2001	17898.728515625
2002	18440.4921875
2003	18769.43359375
2004	19043.126953125
2005	19520.431640625
2006	19490.716796875
2007	19807.142578125
2008	20723.0703125
2009	21125.62109375
2010	21635.44140625
2011	22970.07421875
2012	23479.4765625
2013	24324.609375
2014	24921.23046875
2015	23604.353515625
2016	22372.705078125
2017	22228.294921875
2018	22305.58203125
2019	22303.599609375