Year	current US$
2000	79.0332122864319
2001	83.74526975336629
2002	84.85610206564223
2003	81.82757953297532
2004	94.06969166764387
2005	105.64157053475603
2006	118.3456761893083
2007	143.90606687861742
2008	176.24790113954808
2009	196.61179625514987
2010	218.59163357161074
2011	247.78631512999914
2012	256.1980977110848
2013	246.25967048849827
2014	246.17237624536048
2015	236.72419297130153
2016	261.64620545047524
2017	255.72009268213858
2018	267.9055474801831
2019	247.81520459957986
2020	234.27470286768116
2021	257.38865574638237