Year	current US$
1995	4000000
1996	6000000
1997	8000000
1998	8000000
1999	6000000
2000	5000000
2001	8000000
2002	7000000
2003	16000000
2004	15000000
2005	15000000
2006	24000000
2007	16000000
2008	10000000
2009	9000000
2010	9000000
2011	10000000
2012	8000000
2013	7000000
2014	5000000
2015	8000000
2016	8000000
2017	22000000
2018	27000000
2019	22000000
2020	7000000