Year	current US$
1995	33000000
1996	109000000
1997	112000000
1998	108000000
1999	106000000
2000	75000000
2001	61000000
2002	49000000
2003	26000000
2004	27000000
2005	35000000
2006	37000000
2007	50000000
2008	59000000
2009	35000000
2010	80000000
2011	95000000
2012	64000000
2013	77000000
2014	79000000
2015	65000000
2016	104000000
2017	95000000
2018	28000000
2019	27000000
2020	24000000