Year	current US$
1995	20000000
1996	19000000
1997	14000000
1998	45000000
1999	41000000
2000	51000000
2001	55000000
2002	119000000
2003	138000000
2004	193000000
2005	126000000
2006	172000000
2007	196000000
2008	217000000
2009	210000000
2010	265000000
2011	396000000
2012	485000000
2013	580000000
2014	473000000
2015	422000000
2016	482000000
2017	533000000
2018	719000000
2019	925000000
2020	550000000