Year	current US$
2000	3122890791.66289
2001	822547404.91968
2002	3548968211.6335
2003	3621001649.53857
2004	6548524592.94155
2005	13193417564.0996
2006	19739747759.1845
2007	23129479722.4625
2008	28922373402.0485
2009	14533132001.1865
2010	24511865139.9088
2011	33915923765.7598
2012	37602827312.6533
2013	32876016392.5082
2014	30751101836.6272
2015	14686552691.5397
2016	7971322792.53022
2017	10556144868.486
2018	13996624864.0909
2019	17366898281.4267
2020	12098673625.2285
2021	22010083433.4147