Year	Percent
1996-01-01	7.1947199999999990
1997-01-01	15.3791000000000000
1998-01-01	9.5574100000000000
1999-01-01	22.5515000000000000
2000-01-01	7.4505700000000000
2001-01-01	7.7523800000000005
2002-01-01	6.9543800000000005
2003-01-01	11.3559000000000000
2004-01-01	8.9632500000000000
2005-01-01	5.4639800000000000
2006-01-01	5.8182500000000000
2007-01-01	5.2333400000000000
2008-01-01	4.1598500000000000
2009-01-01	5.8366900000000000
2010-01-01	4.6020400000000010
2011-01-01	4.6055300000000000
2012-01-01	4.8442099999999995
2013-01-01	4.4838100000000000
2014-01-01	4.7969400000000000