Year	current US$
1995	4182000000
1996	3759000000
1997	3794000000
1999	8839000000
2000	9264000000
2001	9219000000
2002	10012000000
2003	10852000000
2004	12815000000
2005	13455000000
2006	14502000000
2007	15683000000
2008	17608000000
2009	16038000000
2010	13857000000
2011	16269000000
2012	14665000000
2013	17433000000
2014	19489000000
2015	17547000000
2016	16811000000
2017	19139000000
2018	21594000000
2019	23003000000
2020	6193000000