Year	current US$
1995	12000000
1996	13000000
1997	8000000
1998	17000000
1999	23000000
2000	18000000
2001	12000000
2002	21000000
2003	18000000
2004	27000000
2005	22000000
2006	24000000
2007	63000000
2008	89000000
2009	107000000
2010	92000000
2011	112000000
2012	90000000
2013	88000000
2014	99000000
2015	73000000
2016	76000000
2017	40000000
2018	71000000
2019	82000000
2020	42000000