Year	current US$
2006	28059999.961405985
2007	25940000.165253878
2008	30339999.984949827
2009	22120000.131428238
2010	28829999.953508385
2011	19639999.9037385
2012	20119999.97124076
2013	26729999.866336577
2014	22759999.776259065
2015	18109861.373901367
2016	19036926.52890459
2017	19224973.461590707
2018	24763199.683278795
2019	20370996.085926894
2020	22221655.530855063
2021	23314391.34664834
2022	22969326.313585047