Year	current US$
1995	24053000000
1996	23982000000
1997	24500000000
1998	25806000000
1999	25327000000
2000	24943000000
2001	24182000000
2002	26717000000
2003	30129000000
2004	36417000000
2005	40518000000
2006	45560000000
2007	49320000000
2008	53402000000
2009	47499000000
2010	49116000000
2011	53465000000
2012	51626000000
2013	55486000000
2014	58721000000
2015	50669000000
2016	52234000000
2017	55750000000
2018	59446000000
2019	58372000000