Year	constant 2015 US$
1995	1621.4323559749369
1996	1580.258268392878
1997	1620.3585066263415
1998	1525.3525519698237
1999	1510.4665299126318
2000	1513.5825096010817
2001	1539.9060408330517
2002	1721.7400346513834
2003	1689.450165088171
2004	1866.9109425629715
2005	1956.8645477490504
2006	2146.4954084479405
2007	2435.1805957566585
2008	2500.1840422953564
2009	2623.8166573110116
2010	2786.434875143077
2011	2870.0247219591074
2012	3004.2206575019954
2013	3104.597233738155
2014	3226.1221636564173
2015	3336.264178510151
2016	3473.906453745056
2017	3624.9873407506084
2018	3702.2614582606843
2019	3780.300183825954
2020	3650.8280430838518
2021	3847.1620666491235