Year	Percent
1998-01-01	108.56700000000001
1999-01-01	108.56700000000001
2000-01-01	108.56700000000001
2001-01-01	108.56700000000001
2002-01-01	54.11280000000000
2003-01-01	46.42590000000000
2004-01-01	52.58860000000000
2005-01-01	51.94810000000000
2006-01-01	53.12500000000000
2007-01-01	119.88200000000000
2008-01-01	30.17500000000000
2009-01-01	39.69160000000000
2010-01-01	58.95230000000000
2011-01-01	29.99520000000000
2012-01-01	22.88290000000000
2013-01-01	28.88760000000000
2014-01-01	44.71590000000000
2015-01-01	37.31770000000000
2016-01-01	27.32270000000000