Year	constant 2015 US$
1995	1707.2987273313472
1996	1687.1204225984752
1997	1730.365690325972
1998	1638.2625855557583
1999	1640.7297772434229
2000	1668.5373997484057
2001	1697.6946895941267
2002	1876.2136900859502
2003	1854.6284273707095
2004	2048.438766620343
2005	2156.188637524271
2006	2362.2663783077924
2007	2672.4803649147025
2008	2750.3463565819834
2009	2830.0380635649317
2010	3009.5987982916313
2011	3109.2282234838312
2012	3247.3001320943154
2013	3342.0107098626427
2014	3459.3145060221414
2015	3557.3592633399444
2016	3684.1303354419324
2017	3840.751062016086
2018	3929.9297101533575
2019	4011.6274367247634
2020	3872.619370473597
2021	4064.7967445277386