Year	Percent
1996-01-01	5.202960000000000
1997-01-01	4.125430000000001
1998-01-01	4.676040000000000
1999-01-01	3.059200000000000
2000-01-01	4.565919999999999
2001-01-01	9.293619999999999
2002-01-01	7.118950000000000
2003-01-01	6.780750000000000
2004-01-01	7.146539999999999
2005-01-01	8.436880000000000
2006-01-01	6.496830000000000
2007-01-01	6.723680000000000
2008-01-01	5.054600000000000
2009-01-01	6.138160000000000
2010-01-01	5.826569999999999
2011-01-01	5.760450000000000
2012-01-01	5.249490000000000
2013-01-01	5.891719999999999
2014-01-01	5.348690000000000
2015-01-01	3.795410000000000
2016-01-01	4.904890000000000