Year	current US$
2000	1104.98993169
2001	1133.5245194
2002	1223.49358544
2003	1436.42941556
2004	1612.91361863
2005	1540.1370983
2006	1551.25624689
2007	1682.28535037
2008	1886.82057393
2009	1912.00797201
2010	1954.72604531
2011	2296.75041304
2012	2189.55076449
2013	2259.27695959
2014	2265.5200777
2015	2174.45546095
2016	2114.99116507
2017	2134.69287451
2018	2187.73854796
2019	2220.56208375
2020	2309.21236162
2021	2474.43270121