Year	Percent
1996-01-01	32.310900000000000
1997-01-01	31.602300000000000
1998-01-01	29.308900000000000
1999-01-01	33.472100000000000
2000-01-01	31.134300000000000
2001-01-01	26.074100000000000
2002-01-01	26.954600000000000
2003-01-01	64.053500000000000
2004-01-01	53.029200000000000
2005-01-01	46.342700000000000
2006-01-01	46.225300000000000
2007-01-01	28.172200000000000
2008-01-01	25.175700000000000
2009-01-01	24.923000000000002
2010-01-01	25.592400000000000
2011-01-01	25.327900000000000
2012-01-01	31.485100000000000
2013-01-01	34.138600000000000
2014-01-01	33.959700000000000