Year	US Dollars
1990	226701381539.79004
1991	234521956245.85504
1992	235703773887.75006
1993	244805505456.95905
1994	258757985403.70001
1995	272062484870.22498
1996	288196946549.80896
1997	300879500087.72607
1998	305140958315.4549
1999	316947242241.19806
2000	337698697590.66803
2001	352124010172.50305
2002	373168506977.41498
2003	390971476188.73596
2004	423228345304.37793
2005	459753999935.26196
2006	500568497590.07898
2007	533867075270.90405
2008	562545568191.09399
2009	563162169588.97607
2010	588011578660.12903
2011	617169274162.82312
2012	641412458486.7262
2013	668612348251.58997
2014	692846045319.40491
2015	710713879524.0791
2016	721683699715.83899
2017	742598770776.68811