Year	US Dollars
1990	280101241375.10504
1991	297749952702.40002
1992	308503617627.04498
1993	322124266205.57495
1994	340998423608.87006
1995	361845413916.91998
1996	381476529612.66595
1997	404319745175.29108
1998	427013345097.60706
1999	463041605018.77301
2000	511195651319.55005
2001	523824221143.99609
2002	546473770151.51001
2003	551700692752.91309
2004	583806380298.93298
2005	604231897175.35388
2006	674005509288.33008
2007	718486263034.4408
2008	739907404676.948
2009	728605411624.35999
2010	746090101408.32495
2011	783057537392.42786
2012	798694335814.30591
2013	829249805178.37073
2014	817617006965.89307
2015	834272428413.94812
2016	850386650187.23071
2017	894410936181.07202