Year	current US$
1995	48000000
1996	37000000
1997	36000000
1998	44000000
1999	37000000
2000	31000000
2001	34000000
2002	45000000
2003	43000000
2004	82000000
2005	66000000
2006	147000000
2007	124000000
2008	90000000
2009	71000000
2010	116000000
2011	29000000
2012	36000000
2013	35000000
2014	72000000
2015	75000000
2016	162000000
2017	178000000
2018	182000000
2019	204000000
2020	57000000