Year	current US$
2002	223000000
2003	164000000
2004	225000000
2005	257000000
2006	306000000
2007	328000000
2008	349000000
2009	303000000
2010	412000000
2011	523000000
2012	508000000
2013	532000000
2014	565000000
2015	519000000
2016	523000000
2017	515000000
2018	602000000
2019	575000000
2020	82000000