Year	current US$
1995	5000000
1996	5000000
1997	6000000
1998	6000000
1999	7000000
2000	9000000
2001	8000000
2002	8000000
2003	8000000
2004	10000000
2005	11000000
2006	14000000
2007	12000000
2008	15000000
2009	11000000
2010	13000000
2011	14000000
2012	15000000
2013	16000000
2014	39000000
2015	37000000
2016	37000000
2017	42000000
2018	41000000
2019	42000000
2020	13000000