Year	current international $
2010	52.1147481692372
2011	32.3188866470501
2012	24.9335052771622
2013	36.1172892982009
2014	42.1586086861969
2015	47.2965399586224
2016	56.2962177361685
2017	53.4600738564231
2018	33.0730511600136
2019	44.6031208685281
2020	33.5246484468062
2021	28.4280422379676