Year Percent 1992-01-01 11.086500072223000 1993-01-01 20.813029543842800 1994-01-01 10.039429835143000 1995-01-01 8.990523614784460 1996-01-01 8.758774728781110 1997-01-01 8.596156667155620 1998-01-01 10.698365527488900 1999-01-01 2.135448444173300 2000-01-01 3.775388291517330 2001-01-01 4.662675569882550 2002-01-01 1.902980970190310 2003-01-01 0.118739205526785 2004-01-01 2.760107816711590 2005-01-01 1.857097891092230 2006-01-01 2.533992583436320 2007-01-01 2.853124372111720 2008-01-01 6.358663801523740 2009-01-01 1.019377353292300 2010-01-01 1.472727272727290 2011-01-01 1.917219136355470 2012-01-01 3.287623066104080 2013-01-01 1.438297872340430 2014-01-01 0.343988589646784 2015-01-01 0.309364548494974 2016-01-01 0.683504209385683 2017-01-01 2.450533984601380