Year	current US$
1995	14000000
1996	17000000
1997	24000000
1998	24000000
1999	15000000
2000	18000000
2001	19000000
2002	22000000
2003	25000000
2004	21000000
2005	35000000
2006	33000000
2007	58000000
2008	77000000
2009	67000000
2010	59000000
2011	67000000
2012	81000000
2013	94000000
2014	94000000
2015	81000000
2016	88000000
2017	119000000
2018	119000000
2019	131000000
2020	38000000