Year	Percent
1996-01-01	28.448300000000000
1997-01-01	41.449600000000000
1998-01-01	21.396400000000000
1999-01-01	34.256800000000000
2000-01-01	43.693500000000000
2001-01-01	38.121700000000000
2002-01-01	38.121700000000000
2003-01-01	30.882800000000000
2004-01-01	35.026400000000000
2005-01-01	34.649100000000000
2006-01-01	61.214900000000000
2007-01-01	78.327100000000000
2008-01-01	44.751600000000000
2009-01-01	40.090400000000000
2010-01-01	30.821300000000000
2011-01-01	52.479900000000000
2012-01-01	54.502800000000000
2013-01-01	52.035200000000000
2014-01-01	55.806999999999995