Year	Percent
1996-01-01	61.73080000000000
1997-01-01	57.81840000000000
1998-01-01	76.47630000000000
1999-01-01	63.53570000000000
2000-01-01	88.05750000000000
2001-01-01	72.11510000000000
2002-01-01	87.92380000000000
2003-01-01	95.02440000000000
2004-01-01	90.43299999999999
2005-01-01	82.18670000000000
2006-01-01	66.54740000000000
2007-01-01	70.44110000000000
2008-01-01	60.24120000000000
2009-01-01	67.55940000000000
2010-01-01	69.25470000000000
2011-01-01	67.84110000000000
2012-01-01	64.16370000000000
2013-01-01	54.62520000000000
2014-01-01	53.10860000000000