Year	current US$
2008	8353730
2009	6989321
2010	9180496
2011	5739492
2012	8248200.000000001
2013	5593277
2014	24227835
2015	15626132
2016	10502624
2017	7925744
2018	9903650
2019	44073889
2020	43185591
2021	24782074
2022	9014081