Year Percent 2001-01-01 0.9648020000000000 2002-01-01 0.9323920000000000 2003-01-01 0.9152650000000000 2004-01-01 0.6847770000000001 2005-01-01 1.1567900000000000 2006-01-01 3.2802700000000000 2007-01-01 6.2654600000000000 2008-01-01 4.8975100000000000 2009-01-01 9.6383600000000000 2010-01-01 9.8226700000000000 2011-01-01 8.8968500000000000 2012-01-01 10.4494000000000000 2013-01-01 12.4518000000000000 2014-01-01 13.5173000000000000 2015-01-01 16.0895000000000000 2016-01-01 16.6704000000000000