Year	current US$
2009	1082577
2010	703388
2011	1269221
2012	3656986
2013	1702027
2014	2236381
2015	1265878
2016	1255852
2017	2004844
2018	2562889
2019	1655574
2020	1788242
2021	1171447
2022	1735161