Year	current US$
1995	5448000000
1996	6253000000
1997	6518000000
1998	7719000000
1999	8022000000
2000	8048000000
2001	6921000000
2002	7301000000
2003	8296000000
2004	10165000000
2005	10014000000
2006	9852000000
2007	11822000000
2008	12805000000
2009	10552000000
2010	12126000000
2011	13998000000
2012	13954000000
2013	14152000000
2014	14505000000
2015	13123000000
2016	13507000000
2017	15063000000
2018	15704000000
2019	14349000000
2020	6144000000