Year	current US$
2006	2000000
2007	5000000
2008	51000000
2009	69000000
2010	68000000
2011	62000000
2012	92000000
2013	57000000
2014	84000000
2015	100000000
2016	118000000
2017	137000000
2018	131000000
2019	110000000
2020	61000000