Year Percent 1999-01-01 7.142860000000001 2000-01-01 22.222200000000000 2001-01-01 18.518500000000000 2002-01-01 50.000000000000000 2003-01-01 47.619000000000000 2004-01-01 57.142900000000000 2005-01-01 57.142900000000000 2006-01-01 76.000000000000000 2007-01-01 66.666700000000000 2008-01-01 88.157900000000000 2009-01-01 50.000000000000000 2010-01-01 39.024400000000000 2011-01-01 50.980400000000000 2012-01-01 50.276200000000000 2013-01-01 41.004200000000000 2014-01-01 40.689700000000000