Year	current US$
1995	16995000000
1996	21944000000
1997	22265100097.65625
1998	22202399902.34375
1999	19131000000
2000	18998000000
2001	19246000000
2002	19291000000
2003	23814000000
2004	27847000000
2005	31307000000
2006	35341000000
2007	44064000000.00001
2008	52615000000
2009	44002000000
2010	42237000000
2011	47740000000
2012	45193000000
2013	48044000000
2014	49720000000
2015	43046000000
2016	46454000000
2017	53069000000
2018	57856000000.00001
2019	58435000000.00001
