Year	current US$
1999	147303038.75021306
2000	170206865.39411747
2001	155388536.71944502
2002	151061262.02465612
2003	161475151.0554791
2004	208685646.19305176
2005	254056551.7251937
2006	245978068.18064338
2007	253533038.57066408
2008	289983741.4859542
2009	296365424.4877329
2010	317338195.57692415
2011	356097992.4193566
2012	367789236.21224
2013	353647430.2598687
2014	334545453.61173093
2015	343726808.6041008
2016	354170591.39542985
2017	380107903.41689944
2018	392453079.8306261