Year	current US$
2007	33424896
2008	17935627
2009	10402350
2010	19545650
2011	18990187
2012	19714197
2013	21595662
2014	18015811
2015	17999515
2016	21706889
2017	24238350
2018	33883932
2019	37391324
2020	36290169
2021	36063879
2022	43398343