Year	Percent
1997-01-01	54.952800000000000
1998-01-01	54.952800000000000
1999-01-01	54.952800000000000
2000-01-01	78.528500000000000
2001-01-01	74.974700000000000
2002-01-01	72.277400000000000
2003-01-01	55.043300000000000
2004-01-01	47.587300000000000
2005-01-01	41.678100000000000
2006-01-01	24.029300000000000
2007-01-01	27.258400000000000
2008-01-01	25.104800000000000
2009-01-01	4.693830000000000
2010-01-01	24.366999999999997
2011-01-01	23.673900000000000
2012-01-01	13.800500000000000
2013-01-01	31.144400000000000
2014-01-01	28.730200000000000
2015-01-01	31.782600000000000
2016-01-01	22.382100000000000