Year	current international $
2000	30.1569007807712
2001	31.2004482859591
2002	31.820212465115
2003	32.7550296406812
2004	33.3126002225274
2005	32.4106334154947
2006	33.7148438946882
2007	33.8096815410088
2008	29.2101990760354
2009	30.1247240626096
2010	31.5743693030446
2011	32.3029739646933
2012	35.1716502044276
2013	35.9193267247717
2014	39.5288958679399
2015	44.624918017808
2016	45.1942123308812
2017	45.3421547287291
2018	46.7105834020582
2019	48.0089474779135
2020	48.7775115266984
2021	54.048752732714