Year Percent 2005-01-01 12.686268721671500 2006-01-01 7.254895560902760 2007-01-01 8.482889267544830 2008-01-01 30.554940606573200 2009-01-01 -8.283078394595270 2010-01-01 0.892536936481858 2011-01-01 10.201660141582300 2012-01-01 7.218257760574910 2013-01-01 7.654316567323970 2014-01-01 4.604334009004910 2015-01-01 -0.706036020319216 2016-01-01 4.380117115360830