Year	constant 2015 US$
1991	655.0255190353678
1992	674.7105992871444
1993	736.6155948350889
1994	761.3097797314026
1995	785.5988717167589
1996	775.689464437081
1997	775.9699492050485
1998	781.363868091923
1999	817.7728282311735
2000	814.6832039551776
2001	826.6963662230756
2002	826.2050777907261
2003	832.5665585894305
2004	883.7568331315695
2005	822.1772847935244
2006	806.3695158983135
2007	835.0758462697603
2008	883.6031626678715
2009	929.3800324833107
2010	1004.3708724788593
2011	1050.2048034978616
2012	1106.0113604068065
2013	1176.9782170999324
2014	1261.31135916367
2015	1312.515184644575
2016	1332.1428369838015
2017	1352.8199131237009
2018	1392.066437023261
2019	1429.0504358440462
2020	1421.7633224031356
2021	1438.9260541995332
2022	1437.053010168033