Year	current US$
1995	19000000
1996	26000000
1997	35000000
1998	25000000
1999	27000000
2000	23000000
2001	23000000
2002	35000000
2003	48000000
2004	54000000
2005	55000000
2006	71000000
2007	71000000
2008	80000000
2009	63000000
2010	109000000
2011	70000000
2012	58000000
2013	61000000
2014	48000000
2015	33000000
2016	32000000
2017	25000000
2018	32000000
2019	65000000
2020	10000000