Year	current US$
2007	20000000
2008	26000000
2009	49000000
2010	56000000
2011	54000000
2012	79000000
2013	78000000
2014	73000000
2015	73000000
2016	69000000
2017	77000000
2018	68000000
2019	70000000
2020	25000000