Year	US Dollars adjusted for inflation)
1995	12774500345.4176
1996	13075853264.0755
1997	14249297305.6058
1998	15178603564.9892
1999	15576124267.8414
2000	16418303264.3689
2001	17479140765.3536
2002	18720689361.2743
2003	20298972875.2022
2004	21991003259.13249
2005	24343389028.1111
2006	27237668361.0711
2007	29955788645.9514
2008	28893063840.1165
2009	24731973839.1568
2010	23757368290.0955
2011	25273331011.2335
2012	26293015995.5129
2013	26931897162.4272
2014	27432357431.7187
2015	28247565848.61869
2016	28871503534.39289
2017	30184965729.44019