Year	current US$
2000	4694816840.60072
2001	5154788318.59385
2002	6044297482.00716
2003	8025150714.56031
2004	9832656824.73288
2005	11567392238.5709
2006	13796684777.9832
2007	17688101123.9626
2008	19128301449.7145
2009	15390801272.3341
2010	15022263279.6517
2011	18192460576.5817
2012	18224551545.2367
2013	20185636012.3783
2014	21396732401.3491
2015	18469479757.3469
2016	19569221533.8228
2017	21869761031.621
2018	24925047862.4632
2019	25294350709.1772
2020	25437878242.181
2021	29895880046.2221