Year	current US$
1995	360000000
1996	412000000
1997	407000000
1998	493000000
1999	370000000
2000	337000000
2001	327000000
2002	337000000
2003	353000000
2004	445000000
2005	554000000
2006	534000000
2007	595000000
2008	721000000
2009	766000000
2010	830000000
2011	899000000
2012	967000000
2013	1034000000
2014	1102000000
2015	1195000000
2016	922000000
2017	807000000
2018	738000000
2019	651099975.585938