Year Percent 2005-01-01 100.00000000000000 2006-01-01 98.10610000000000 2007-01-01 94.14990000000000 2008-01-01 82.35450000000000 2009-01-01 87.23710000000000 2010-01-01 96.70860000000000 2011-01-01 94.88640000000000 2012-01-01 94.95100000000001 2013-01-01 100.00000000000000