Year	current international $
2000	28.0219538746738
2001	29.2134360846654
2002	29.7890101817472
2003	30.641875485684
2004	31.085382715274
2005	30.1653594240862
2006	31.3823959964175
2007	31.3492395500228
2008	26.7761910542579
2009	28.2384434330914
2010	30.1589908061726
2011	31.3538227513989
2012	31.004084738748
2013	31.6523561172532
2014	34.3564447962733
2015	39.1639774796211
2016	39.631412084055
2017	39.7509682633852
2018	40.9118949107494
2019	42.0081251252159
2020	42.672392392018
2021	47.2658509357182