Year	US Dollars
1990	515746781330.14099
1991	570491503508.31287
1992	621425761720.18701
1993	684536914911.49402
1994	760610623275.88403
1995	838060451758.56592
1996	922549799065.70813
1997	979973205384.31384
1998	836508946795.32996
1999	838086002435.0061
2000	908921597569.6449
2001	993670593011.73022
2002	1062162052163.67004
2003	1125157972597.0603
2004	1204858658627.25
2005	1310599747656.27979
2006	1434247562894.88013
2007	1568262556783.56982
2008	1705066027365.96997
2009	1798540997333.08008
2010	1950593279688.42944
2011	2111380501435.94019
2012	2278686915195.56006
2013	2439984220636.74023
2014	2598342369463.91016
2015	2755618016114.80029
2016	2934766583566.7002
2017	3140240568081.54932