Year	current international $
2000	28.814036620756983
2001	30.238835200748834
2002	33.26429092740954
2003	35.246554388877385
2004	37.41893084956634
2005	39.591133243367246
2006	42.902852411604144
2007	46.72055294719406
2008	49.57041365349406
2009	51.77526803542806
2010	52.23429144051755
2011	53.48008215438642
2012	56.081059069253904
2013	62.424326554963436
2014	64.82360489796753
2015	68.38642801131842
2016	71.16156251364912
2017	70.45494272637487
2018	71.30318942483127
2019	75.39011235758545
2020	74.51310240051744
2021	78.26547179318213