Year	current international $
2000	21.5275750960505
2001	15.214895630272
2002	15.0675617211957
2003	12.0965561629707
2004	37.24459341403
2005	39.7542144420056
2006	34.1834098638312
2007	17.2450418476168
2008	20.3419960975119
2009	57.6505855351178
2010	56.8292846367567
2011	50.3413444103906
2012	44.2249032684491
2013	39.3008012455868
2014	59.8812168085182
2015	68.5886220324177
2016	73.1322093489561
2017	86.1635472380999
2018	83.3158362499504
2019	70.3303971942538
2020	199.887235154673
2021	197.244348629531