Year	current US$
1995	69000000
1996	76000000
1997	72000000
1998	67000000
1999	83000000
2000	147000000
2001	151000000
2002	186000000
2003	107000000
2004	96000000
2005	180000000
2006	93000000
2007	94000000
2008	75000000
2009	105000000
2010	71000000
2011	150000000
2012	196000000
2013	89000000
2014	124000000
2015	207000000
2016	187000000
2017	97000000
2018	98000000
2019	86000000
2020	33000000