Year	current international $
2000	156.259938724446
2001	164.289921812548
2002	174.889097512898
2003	186.820909523101
2004	200.349952080297
2005	208.430177568286
2006	229.7812174318
2007	257.065198499933
2008	274.487875621791
2009	299.2129826512
2010	326.157588688655
2011	355.69184411328
2012	373.235991237038
2013	401.81196028291
2014	400.164198657783
2015	350.004917310979
2016	362.169184069977
2017	361.154467474262
2018	349.854618611651
2019	413.408686386266
2020	456.065120997206
2021	464.142919754805