Year	Percent
1996-01-01	25.32560
1997-01-01	25.45050
1998-01-01	23.60530
1999-01-01	22.83150
2000-01-01	26.46690
2001-01-01	33.48210
2002-01-01	42.44660
2003-01-01	48.05000
2004-01-01	7.93283
2005-01-01	23.59120
2006-01-01	33.46090
2007-01-01	16.36400
2008-01-01	17.74530
2009-01-01	18.77030
2010-01-01	27.86920
2011-01-01	33.33920
2012-01-01	36.41380
2013-01-01	37.57750
2014-01-01	31.85320