Year	current US$
1995	17000000
1996	25000000
1997	10000000
1998	14000000
1999	12000000
2000	13000000
2001	15000000
2002	14000000
2003	19000000
2004	22000000
2005	29000000
2006	34000000
2007	57000000
2008	71000000
2009	64000000
2010	57000000
2011	72000000
2012	88000000
2013	93000000
2014	97000000
2015	86000000
2016	77000000
2017	78000000
2018	86000000
2019	93000000
2020	27000000