Year	current US$
1995	10000000
1996	11000000
1997	11000000
1998	11000000
1999	15000000
2000	15000000
2001	17000000
2002	13000000
2003	13000000
2004	13000000
2005	10000000
2006	10000000
2007	11000000
2008	11000000
2009	11000000
2010	12000000
2011	15000000
2012	22000000
2013	20000000
2014	20000000
2015	17000000
2016	17000000
2017	21000000
2018	28000000
2019	25000000
2020	5000000