Year	current US$
1999	193532103.787363
2000	172995749.165126
2001	185495219.221455
2002	201257621.187148
2003	249608690.325343
2004	293473821.318359
2005	294528842.153815
2006	315041830.49514
2007	363450515.131238
2008	467705218.713822
2009	463982495.398926
2010	403308696.004768
2011	344214064.719871
2012	319375655.639674
2013	335040931.364753
2014	333396054.092401
2015	289080139.981922
2016	302221681.607552
2017	314218679.438383
2018	351996826.949221
2019	341237984.560506
2020	339522687.598392