Year	current US$
1995	310165940583.7279
1996	328439895312.35004
1997	325154939325.3831
1998	331462998899.2421
1999	350120561652.86096
2000	351355451274.4456
2001	337951837857.21344
2002	348747000000.00006
2003	393347000000.00006
2004	456672000000.00006
2005	481362000000.00006
2006	513764000000.00006
2007	584617000000
2008	639260000000
2009	577734000000
2010	617889000000
2011	702027000000.0001
2012	717044000000.0001
2013	780177000000.0001
2014	825405000000.0001
2015	778995000000.0001
2016	798231000000.0002
2017	850358000000.0002
2018	912001000000.0004
2019	905094317511.2866