Year	Percent
1998-01-01	61.20000000000000
1999-01-01	69.40000000000000
2000-01-01	61.10000000000000
2001-01-01	66.40000000000000
2002-01-01	73.80000000000000
2003-01-01	79.20000000000000
2004-01-01	102.90000000000000
2005-01-01	124.50000000000000
2006-01-01	108.20000000000000
2007-01-01	115.20000000000000
2008-01-01	116.40000000000000
2009-01-01	111.80000000000000
2010-01-01	142.78000000000000
2011-01-01	171.16000000000000
2012-01-01	140.96200000000002
2013-01-01	147.75900000000000
2014-01-01	139.66200000000000
2015-01-01	148.43800000000000
2016-01-01	136.93300000000000