Year	current US$
2006	164000000
2007	132000000
2008	130000000
2009	120000000
2010	129000000
2011	145000000
2012	183000000
2013	192000000
2014	168000000
2015	191000000
2016	194000000
2017	271000000
2018	284000000
2019	299000000