Year	US Dollars
1995	27257476011.3925
1996	28619162904.9234
1997	30463804034.70848
1998	31874165979.8468
1999	33985273920.0717
2000	35964856273.1086
2001	37912787455.9478
2002	40300066691.12581
2003	41875526899.9535
2004	45030557167.8739
2005	47619792013.243
2006	51245364997.5337
2007	54608775693.8854
2008	58498269613.38869
2009	55281737463.94029
2010	56352280219.4785
2011	58661458082.92071
2012	58911723437.8116
2013	60556015596.02101
2014	63041487353.65449
2015	62983738354.32288
2016	65686173003.3923
2017	70223723341.19281