Year	current US$
1994	6600000
1998	8000000
1999	78300000
2001	164500000
2003	75000000
2005	283000000
2006	1020000000
2007	875800000
2008	439000000
2009	987830000
2010	127000000
2011	909000000
2012	983000000
2013	1506000000
2014	619600000
2015	6997000000
2017	415100000
2018	215000000
2020	229000000
2022	800000000