Year	Percent
1996-01-01	21.428600000000000
1997-01-01	21.739100000000000
1998-01-01	25.000000000000000
1999-01-01	28.301900000000000
2000-01-01	27.457600000000000
2001-01-01	35.279500000000000
2002-01-01	31.397800000000000
2003-01-01	29.906900000000000
2004-01-01	38.284400000000000
2005-01-01	39.817600000000000
2006-01-01	36.923900000000000
2007-01-01	38.630700000000000
2008-01-01	31.330400000000000
2009-01-01	30.110800000000000
2010-01-01	33.071999999999996
2011-01-01	34.193200000000000
2012-01-01	32.816700000000000
2013-01-01	33.947500000000000
2014-01-01	31.722600000000000