Year	Percent
1996-01-01	31.818200000000000
1997-01-01	41.935500000000000
1998-01-01	36.000000000000000
1999-01-01	34.482800000000000
2000-01-01	27.674600000000000
2001-01-01	27.243100000000000
2002-01-01	26.838600000000000
2003-01-01	28.347700000000000
2004-01-01	28.991400000000000
2005-01-01	26.993000000000002
2006-01-01	28.902600000000000
2007-01-01	30.775500000000000
2008-01-01	33.655200000000000
2009-01-01	29.407100000000000
2010-01-01	25.420500000000000
2011-01-01	22.700300000000000
2012-01-01	20.430999999999997
2013-01-01	19.839800000000000
2014-01-01	26.424200000000000