Year	current international $
2000	12.185334567333
2001	6.51909352400579
2002	5.58462610258648
2003	5.37147373667507
2004	4.87401606889734
2005	2.57608130467621
2006	2.26895137355118
2007	1.90306337274044
2008	2.82997827290733
2009	4.68895214380817
2010	5.15127907287698
2011	5.35341647928933
2012	3.77634464994918
2013	3.93211481026875
2014	2.85861885356433
2015	2.68079938699096
2016	3.11377076669321
2017	2.54682818944149
2018	0.618440166026782
2019	0.0640564486684299
2020	0.0409304722040742
2021	3.33608123955168