Year	current US$
1995	30000000
1996	32000000
1997	35000000
1998	304000000
1999	325000000
2000	357000000
2001	374000000
2002	383000000
2003	441000000
2004	495000000
2005	867000000
2006	910000000
2007	990000000
2008	970000000
2009	849000000
2010	706000000
2011	797000000
2012	1154000000
2013	1010000000
2014	1027000000
2015	911000000
2016	952000000
2017	919000000
2018	996000000
2019	1490000000
2020	191000000