Year	Percent
1997-01-01	1.16167000000000
1998-01-01	0.95440800000000
1999-01-01	70.50550000000000
2000-01-01	84.20740000000000
2001-01-01	88.54850000000000
2002-01-01	100.65299999999999
2003-01-01	102.42600000000000
2004-01-01	118.66400000000000
2005-01-01	124.94500000000000
2006-01-01	142.40900000000000
2007-01-01	167.04000000000000
2008-01-01	118.13900000000000
2009-01-01	125.45500000000000
2010-01-01	115.95200000000001
2011-01-01	108.75900000000000
2012-01-01	130.95200000000000
2013-01-01	116.29899999999999
2014-01-01	105.76000000000000
2015-01-01	112.37000000000000
2016-01-01	106.49200000000000