Year	US Dollars
1995	6865807346.94222
1996	6908529587.24053
1997	7087562294.96695
1998	6672689548.40848
1999	6546353885.10163
2000	6807853915.1324
2001	7736371770.79099
2002	8478298109.92439
2003	9669019397.67685
2004	10778359654.3951
2005	11859504936.9495
2006	12784425118.2096
2007	13221142639.3671
2008	14597700600.3882
2009	13299430404.8008
2010	14787863158.4697
2011	16102758556.6803
2012	16731882437.4488
2013	18551829536.2664
2014	19686566960.7023
2015	19234286128.7095
2016	20308550169.55229
2017	21501163250.7634