Year	US Dollars adjusted for inflation)
1994	4485011706.38483
1995	4804277804.09321
1996	4862657058.62174
1997	5575873936.26576
1998	6375131061.85581
1999	6903019283.60254
2000	6312384282.05084
2001	5724660964.01677
2002	5009697076.26217
2003	5711849556.53918
2004	6302630142.26677
2005	6983236164.51331
2006	6710848171.43881
2007	7153132897.76715
2008	7587992831.12553
2009	8245305385.231
2010	8913100000
2011	10019539736.7002
2012	10649191297.3882
2013	10885328830.6682
2014	10865529382.7483
2015	11238079288.8293
2016	11767216976.1681
2017	12136735451.64