Year	Percent
1999-01-01	34.452500000000000
2000-01-01	39.043400000000000
2001-01-01	38.748900000000000
2002-01-01	50.431600000000000
2003-01-01	55.858999999999995
2004-01-01	60.396300000000000
2005-01-01	53.993400000000000
2006-01-01	62.194600000000000
2007-01-01	58.631100000000000
2008-01-01	47.264400000000000
2009-01-01	69.331400000000000
2010-01-01	72.559300000000000
2011-01-01	71.615800000000000
2012-01-01	91.383800000000000
2013-01-01	92.795400000000000
2014-01-01	89.343700000000000
2015-01-01	92.155300000000000
2016-01-01	85.523600000000000