Year	constant 2015 US$
2000	6206547590.339585
2001	5621147631.124681
2002	7228795918.925245
2003	7867263256.28817
2004	7978515641.583037
2005	8874480195.583212
2006	9349921885.778883
2007	10642671963.11354
2008	11060395115.680857
2009	13426272073.23976
2010	15354612541.505938
2011	15420077665.532303
2012	17386490239.353626
2013	18360263162.757835
2014	18860496494.04041
2015	19134221644.732494
2016	19566715174.163273
2017	20084646751.495384
2018	20323499020.363865
2019	21118473702.347073
2020	20621957125.207726
2021	16345202562.548473
2022	15325233810.138836