Year	current US$
1995	13000000
1996	6000000
1997	13000000
1998	17000000
1999	16000000
2000	14000000
2001	16000000
2002	18000000
2003	17000000
2004	17000000
2005	20000000
2006	36000000
2007	38000000
2008	46000000
2009	40000000
2010	48000000
2011	40000000
2012	36000000
2013	25000000
2014	28000000
2015	20000000
2016	20000000
2017	20000000
2018	29000000
2019	25000000
2020	10000000