Year	current US$
1995	73000000
1996	120000000
1997	156000000
1998	135000000
1999	140000000
2000	146000000
2001	135000000
2002	159000000
2003	188000000
2004	218000000
2005	226000000
2006	218000000
2007	251000000
2008	250000000
2009	243000000
2010	243000000
2011	269000000
2012	275000000
2013	320000000
2014	329000000
2015	342000000
2016	319000000
2017	349000000
2018	381000000
2019	389000000
2020	306000000