Year	current US$
2007	30000000
2008	46000000
2009	47000000
2010	52000000
2011	51000000
2012	51000000
2013	49000000
2014	51000000
2015	44000000
2016	45000000
2017	43000000
2018	53000000
2019	52000000
2020	14000000