Year	current US$
1995	41000000
1996	48000000
1997	51000000
1998	55000000
1999	58000000
2000	60000000
2001	59000000
2002	60000000
2003	60000000
2004	75000000
2005	94000000
2006	106000000
2007	152000000
2008	211000000
2009	212000000
2010	252000000
2011	231000000
2012	207000000
2013	252000000
2014	271000000
2015	309000000
2016	347000000
2017	369000000
2018	414000000
2019	431000000
2020	106000000