Year	constant 2015 US$
2011	87622.03419746648
2012	85969.96301002066
2013	89464.18422923803
2014	91826.4582627896
2015	92057.68033752563
2016	87937.91280984075
2017	83634.70133528006
2018	77200.22925691782
2019	73718.52558192321
2020	69311.1119338351
2021	69491.4092310029
2022	71916.6705287972