Year Percent 1996-01-01 0.09492000000000000 1997-01-01 0.11355400000000000 1998-01-01 0.13831600000000000 1999-01-01 0.26456199999999996 2000-01-01 0.28272900000000000 2001-01-01 0.17892000000000000 2002-01-01 0.16677999999999998 2003-01-01 0.11490500000000000 2004-01-01 1.57654000000000000 2005-01-01 1.70394000000000020 2006-01-01 0.64742700000000010 2007-01-01 0.64742700000000010 2008-01-01 0.12511500000000000 2009-01-01 0.12543300000000000 2010-01-01 0.13711800000000002 2011-01-01 0.24250900000000000 2012-01-01 0.27406900000000000