Year	current international $
2000	4.48996779259255
2001	4.18583335502567
2002	6.02541627862512
2003	12.1669796572697
2004	8.97406874075099
2005	6.70960324535623
2006	3.02661338505391
2007	5.29247469725196
2008	6.8103307980172
2009	6.96927886488497
2010	6.71704583520865
2011	5.9565447582033
2012	6.33176745850021
2013	12.3368035010302
2014	15.6777417056466
2015	13.6657978156593
2016	3.52170975518775
2017	14.8956580738008
2018	17.2441544893907
2019	22.4375441694756
2020	13.3099241038117
2021	57.2137095456821