Year	current US$
2008	14320000.307634471
2009	13030000.070109967
2010	10390000.073239202
2011	8820000.190287825
2012	9250000.108033426
2013	9730000.114068398
2014	10909999.940544372
2015	11170000.180602076
2016	13820000.06362796
2017	17719999.762251973
2018	19369999.88928436
2019	21130000.17963349
2020	20780000.3811717
2021	24850000.23990869
2022	25710000.02324582