Year	current US$
1995	184000000
1996	205000000
1997	194000000
1998	203000000
1999	210000000
2000	203000000
2001	216000000
2002	223000000
2003	236000000
2004	277000000
2005	295000000
2006	347000000
2007	384000000
2008	489000000
2009	384000000
2010	423000000
2011	427000000
2012	394000000
2013	458000000
2014	503000000
2015	616000000
2016	683000000
2017	738000000
2018	663000000
2019	656000000
2020	224000000