Year	current US$
1995	43000000
1996	31000000
1997	31000000
1998	36000000
1999	37000000
2000	47000000
2001	49000000
2002	43000000
2003	55000000
2004	87000000
2005	78000000
2006	88000000
2007	93000000
2008	97000000
2009	63000000
2010	64000000
2011	71000000
2012	80000000
2013	93000000
2014	89000000
2015	71000000
2016	74000000
2017	76000000
2018	90000000
2019	91000000
2020	38000000