Year	constant 2015 US$
1995	1134.0858807278237
1996	1247.7874819030872
1997	1342.9355237795214
1998	1428.556889059623
1999	1523.4841868778126
2000	1635.6002499963915
2001	1792.7819622881293
2002	1982.018915035848
2003	2188.428822739451
2004	2395.593110241229
2005	2670.9109745468973
2006	3021.903075133305
2007	3447.6084018221986
2008	3636.781376397465
2009	4068.9473209090347
2010	4382.917978772699
2011	4556.5299964599435
2012	4987.018192851012
2013	5238.959835205841
2014	5640.083772811696
2015	6012.71864865345
2016	6419.014684595562
2017	6828.09027131289
2018	7075.262560064591
2019	7348.407310696722
2020	7346.331430766919
2021	7884.51727194787