Year	current US$
2000	83.4623642
2001	89.19979858
2002	97.49507904
2003	97.19953156
2004	105.008255
2005	123.05088806
2006	135.87088013
2007	158.16543579
2008	190.84877014
2009	208.39193726
2010	240.25761414
2011	262.96740723
2012	307.31854248
2013	320.3164978
2014	331.78091431
2015	310.26644897
2016	311.43518066
2017	333.11575317
2018	363.42483521
2019	366.56491089
2020	388.48730469
2021	412.20855713