Year	Percent
1998-01-01	99.60000000000000
1999-01-01	109.00000000000000
2000-01-01	104.00000000000000
2001-01-01	115.50000000000000
2002-01-01	131.40000000000000
2003-01-01	127.30000000000000
2004-01-01	119.00000000000000
2005-01-01	135.50000000000000
2006-01-01	161.70000000000000
2007-01-01	170.00000000000000
2008-01-01	168.20000000000000
2009-01-01	162.30000000000000
2010-01-01	112.59299999999999
2011-01-01	118.40200000000000
2012-01-01	108.05400000000000
2013-01-01	112.46400000000000
2014-01-01	118.38200000000000
2015-01-01	104.11100000000000
2016-01-01	89.14340000000000