Year	current US$
2012	28045415.342319753
2013	32468240.66760018
2014	26884320.22556662
2015	35403129.92129474
2016	31117529.937997457
2017	36941000.089515
2018	46519417.735748
2019	71558780.18215297
2020	52073258.06096196
2021	57005170.08639872
2022	50856550.093740225