Year	Percent
1998-01-01	131.40000000000000
1999-01-01	152.90000000000000
2000-01-01	145.50000000000000
2001-01-01	146.50000000000000
2002-01-01	128.10000000000000
2003-01-01	130.90000000000000
2004-01-01	165.50000000000000
2005-01-01	177.60000000000000
2006-01-01	198.20000000000000
2007-01-01	209.80000000000000
2008-01-01	179.00000000000000
2009-01-01	81.10000000000000
2010-01-01	92.65060000000000
2011-01-01	99.05430000000000
2012-01-01	103.23899999999999
2013-01-01	108.86000000000000
2014-01-01	112.40000000000000
2015-01-01	120.56600000000000
2016-01-01	134.75400000000000