Year	current US$
1995	129000000
1996	141000000
1997	157000000
1998	135000000
1999	136000000
2000	139000000
2001	146000000
2002	164000000
2003	171000000
2004	172000000
2005	192000000
2006	228000000
2007	326000000
2008	309000000
2009	257000000
2010	274000000
2011	291000000
2012	388000000
2013	430000000
2014	398000000
2015	392000000
2016	414000000
2017	483000000
2018	559000000
2019	590000000
2020	221000000