Year	constant 2015 US$
2000	494.3748393585989
2001	538.6107554994322
2002	576.5358711018454
2003	652.7271535359891
2004	732.5394270089204
2005	831.9954993359704
2006	886.5407042317812
2007	972.1607847492447
2008	1044.745963928447
2009	1115.4253729077261
2010	1085.2254319924518
2011	1078.3811442624535
2012	1091.3261945531576
2013	1125.3690450793288
2014	1225.7794368974505
2015	1272.2410168289537
2016	1209.5934650620386
2017	1212.1047935635788
2018	1276.2468263111753
2019	1303.416834952298
2020	1323.5657091161238
2021	1291.0175752475163
2022	1248.7171575359637