Year	current international $
2000	2.62513483974535
2001	8.80351680695199
2002	15.3414304600067
2003	17.3577668758901
2004	15.1027547411977
2005	14.2595173401464
2006	13.800019143425
2007	14.6066455147922
2008	10.8567019008565
2009	13.7871199882936
2010	15.4140244536451
2011	15.1653940815867
2012	18.2444283069667
2013	25.5580775772141
2014	37.2722389541878
2015	8.00342134521178
2016	16.0302664583748
2017	13.7886838203928
2018	18.3811931956703
2019	30.7568944121014
2020	18.9397914619029
2021	36.8007991780354