Year	current US$
1995	34000000
1996	31000000
1997	31000000
1998	29000000
1999	28000000
2000	44000000
2001	41000000
2002	53000000
2003	54000000
2004	53000000
2005	59000000
2006	56000000
2007	73000000
2008	64000000
2009	56000000
2010	63000000
2011	65000000
2012	58000000
2013	62000000
2014	65000000
2015	54000000
2016	92000000
2017	104000000
2018	101000000
2019	109000000
2020	39000000