Year Percent 1995-01-01 5.3434599999999990 1996-01-01 5.5276700000000000 1997-01-01 5.5276700000000000 1998-01-01 5.5276700000000000 1999-01-01 5.5276700000000000 2000-01-01 5.5276700000000000 2001-01-01 5.5276700000000000 2002-01-01 5.5276700000000000 2003-01-01 5.5276700000000000 2004-01-01 5.5276700000000000 2005-01-01 4.9523100000000000 2006-01-01 7.9739300000000000 2007-01-01 7.5033500000000000 2008-01-01 14.3416000000000000 2009-01-01 23.7622000000000000 2010-01-01 20.7263000000000000 2011-01-01 17.5443000000000000 2012-01-01 18.0182000000000000 2013-01-01 17.9642000000000000 2014-01-01 3.4048000000000000 2015-01-01 10.6466000000000000 2016-01-01 6.9116100000000005