Year	current US$
2000	100.08681689
2001	103.59211563
2002	100.38536036
2003	100.08265114
2004	117.06916635
2005	150.26703585
2006	172.74999114
2007	218.39210282
2008	262.65571208
2009	276.35537074
2010	326.49458643
2011	368.45212489
2012	381.59176841
2013	405.08905294
2014	413.18646618
2015	331.9181248
2016	314.4220151
2017	351.84476039
2018	370.36023852
2019	349.89278239
2020	329.51225434
2021	404.72371717