Year	current international $
2000	3.49866202874912
2001	3.92372481117512
2002	9.09400326821362
2003	6.22683007985631
2004	8.79902287902759
2005	10.9372154098931
2006	16.0964477922076
2007	14.9176115685962
2008	17.1164212843731
2009	20.6642455257074
2010	22.1664861650558
2011	23.0855664851373
2012	26.6816365304646
2013	29.2746442865581
2014	36.7253103868689
2015	33.2429143577771
2016	23.9897326159518
2017	22.6529913671074
2018	29.2303809552434
2019	14.1529100497172
2020	4.89486845645613
2021	31.7354641683197