Year	current US$
2001	20759842843.034542
2002	23356542107.90075
2003	26267131847.80755
2004	34977239804.2854
2005	39179524873.340034
2006	43472548822.6559
2007	52287916094.903625
2008	62297290644.23882
2009	54165770097.56212
2010	62301417795.89302
2011	72311114711.19606
2012	86364184718.61995
2013	101146198245.87486
2014	97861487192.63538
2015	77950020544.57898
2016	68300773289.130394
2017	83037467892.88393
2018	91384400506.62358
2019	94379487631.83163