Year	current US$
1995	23000000
1996	55000000
1997	25000000
1998	22000000
1999	12000000
2000	93000000
2001	211000000
2002	234000000
2003	267000000
2004	270000000
2005	253000000
2006	286000000
2007	324000000
2008	363000000
2009	370000000
2010	440000000
2011	487000000
2012	685000000
2013	791000000
2014	868000000
2015	729000000
2016	711000000
2017	801000000
2018	883000000
2019	901000000
2020	355000000