Year	constant 2010 US$
2000	4372171651.49545
2001	4893368010.40312
2002	5407802340.70221
2003	6546684005.20156
2004	7850195058.51756
2005	9104291287.38622
2006	9333420026.0078
2007	12292587776.3329
2008	16421586475.9428
2009	15488946684.0052
2010	14079843953.186
2011	16045293368.0104
2012	20239165669.7009
2013	21476228608.5826
2014	21648450455.1365
2015	22143222886.8661
2016	21525097529.2588
2017	20410143042.9129
2018	20532639791.9376