Year	current US$
2000	163.8836691
2001	128.40229942
2002	118.97345207
2003	135.52853861
2004	137.71240974
2005	148.14278903
2006	153.04397258
2007	154.46705952
2008	174.17665168
2009	190.09367337
2010	212.51022638
2011	229.70450972
2012	245.51195284
2013	237.52781393
2014	240.8780018
2015	251.24249574
2016	273.90150019
2017	279.21642649
2018	321.71265723
2019	285.24703457
2020	265.73602608
2021	309.26593654