Year	current US$
1995	312000000
1996	347000000
1997	317000000
1998	331000000
1999	337000000
2000	291000000
2001	289000000
2002	490000000
2003	551000000
2004	571000000
2005	549000000
2006	583000000
2007	606000000
2008	612000000
2009	589000000
2010	569000000
2011	580000000
2012	560000000
2013	583000000
2014	625000000
2015	560000000
2016	491000000
2017	564000000
2018	625000000
2019	702000000
2020	315000000