Year	constant 2011 PPP $
1991	9585.28515625
1992	9432.388671875
1993	8707.1982421875
1994	8529.5126953125
1995	8099.8271484375
1996	7526.31396484375
1997	7224.09619140625
1998	6971.0830078125
1999	6903.3271484375
2000	6677.75
2001	6634.6181640625
2002	6632.1181640625
2003	6645.255859375
2004	6703.6162109375
2005	6718.10693359375
2006	6788.23291015625
2007	6886.90380859375
2008	7071.10302734375
2009	7302.2939453125
2010	7414.5
2011	7525.05615234375
2012	7661.88623046875
2013	7777.60302734375
2014	8027.2041015625
2015	8266.333984375
2016	8595.673828125
2017	8998.5947265625
2018	9407.1083984375
2019	9836.248046875