Year	current US$
2011	32560000.240802784
2012	30088556.557893757
2013	37221116.66202543
2014	34355331.62951472
2015	55199918.68734361
2016	37504480.153322235
2017	44511371.01650241
2018	49432425.677776314
2019	42779272.615909584