Year	current US$
1995	60260000000
1996	59076000000
1997	53667000000
1998	54423000000
1999	55877000000
2000	52829000000
2001	51824000000
2002	53052000000
2003	65290000000
2004	71231000000
2005	74167000000
2006	74153000000
2007	83138000000
2008	91641000000
2009	81461000000
2010	77566000000
2011	86227000000
2012	83202000000
2013	91311000000
2014	93284000000
2015	77468000000
2016	79923000000
2017	89736000000
2018	95199000000
2019	93097000000
2020	38752000000