Year	constant 2015 US$
2012	233201570.06644765
2013	216333722.81936
2014	188813564.58607733
2015	189863187.40499124
2016	182633426.53219867
2017	162144638.52932647
2018	172028506.8272403
2019	171110232.17207828
2020	177762756.2225057
2021	154902164.432175