Year	Percent
2000-01-01	93.010260000000000
2001-01-01	88.669440000000010
2002-01-01	88.669440000000010
2003-01-01	85.934140000000000
2004-01-01	80.200200000000000
2005-01-01	61.589280000000000
2006-01-01	55.119209999999995
2007-01-01	68.205720000000000
2008-01-01	56.903590000000000
2009-01-01	67.437550000000000
2010-01-01	54.852100000000000
2011-01-01	51.423060000000000
2012-01-01	48.820430000000000
2013-01-01	50.817130000000000