Year	current international $
2000	2.31677788521152
2001	6.96289249695593
2002	10.1113963978495
2003	6.90098161442379
2004	13.238585001996
2005	7.77444122935218
2006	9.47694612440292
2007	7.51230643063736
2008	19.528858356347
2009	18.2320142305909
2010	12.4056031104464
2011	19.9215537470139
2012	23.043770565778
2013	22.3024209362137
2014	28.4239223941382
2015	20.2914713172734
2016	40.3149364800351
2017	43.3204369222668
2018	47.7857151087737
2019	48.4393960581662
2021	2.88778682512097