Year	current US$
2000	79.03321228643192
2001	83.7452697533663
2002	84.85610206564225
2003	81.8275795329753
2004	94.06969166764385
2005	105.64157053475603
2006	118.34567618930829
2007	143.90606687861745
2008	176.2479011395481
2009	196.61179625514987
2010	218.59163357161074
2011	247.78631512999914
2012	256.19809771108487
2013	246.25967048849827
2014	246.17237624536048
2015	236.72419297130153
2016	261.64620545047524
2017	255.72009268213853
2018	267.9055474801831
2019	247.8152045995799
2020	234.2747028676812
2021	257.3886557463824