Year	current US$
1995	3688000000
1996	4474000000
1997	8130000000
1998	9205000000
1999	10864000000
2000	13114000000
2001	13909000000
2002	15398000000
2003	15187000000
2004	19149000000
2005	21759000000
2006	24322000000
2007	29786000000
2008	36157000000
2009	43702000000
2010	54880000000
2011	72585000000
2012	101977000000
2013	128576000000
2014	227344000000
2015	249831000000
2016	250112000000
2017	257875000000
2018	277265000000
2019	254621000000
2020	130504000000