Year	constant 2021 PPP $
1991	28147.873981282788
1992	28064.509423137915
1993	26984.05986520574
1994	24852.489452441263
1995	25122.103913282874
1996	25418.525555548153
1997	24751.835831199343
1998	25182.501993679998
1999	23904.952382171414
2000	24392.94333799175
2001	24155.68732847608
2002	24579.889946593335
2003	24127.353400757987
2004	24012.165971121223
2005	24791.81585111434
2006	25577.647498074628
2007	23070.454838711965
2008	23750.935449606786
2009	25373.853993080113
2010	26508.6425075817
2011	26350.210226823187
2012	28332.351554202793
2013	27769.23293205276
2014	28988.567464397045
2015	28729.456474417504
2016	25814.862259022546
2017	23958.738091102296
2018	22863.96742146128
2019	22418.279920157296
2020	21207.09863004768
2021	20680.597750982808
2022	19751.627799516576
2023	19348.514404565136