Year	current US$
1995	64000000
1996	70000000
1997	69000000
1998	52000000
1999	66000000
2000	83000000
2001	65000000
2002	55000000
2003	70000000
2004	94000000
2005	106000000
2006	101000000
2007	92000000
2008	93000000
2009	95000000
2010	88000000
2011	98000000
2012	91000000
2013	91000000
2014	89000000
2015	104000000
2016	109000000
2017	128000000
2018	149000000
2019	165000000
2020	75000000