Year	current US$
1995	2000000
1996	4000000
1997	17000000
1998	19000000
1999	17000000
2000	23000000
2001	25000000
2002	31000000
2003	30000000
2004	44000000
2005	49000000
2006	132000000
2007	152000000
2008	186000000
2009	174000000
2010	202000000
2011	252000000
2012	282000000
2013	294000000
2014	304000000
2015	338000000
2016	363000000
2017	381000000
2018	392000000
2019	458000000
2020	120000000