Year	current US$
1995	251000000
1996	251000000
1997	235000000
1998	235000000
1999	239000000
2000	263000000
2001	273000000
2002	260000000
2003	300000000
2004	340000000
2005	374000000
2006	410000000
2007	437000000
2008	458000000
2009	415000000
2010	547000000
2011	607000000
2012	593000000
2013	675000000
2014	681000000
2015	696000000
2016	749000000
2017	795000000
2018	864000000
2019	798000000
2020	369000000