Year Percent 1999-01-01 0.002000000000000000 2000-01-01 0.002000000000000000 2001-01-01 0.024469000000000000 2002-01-01 0.016777000000000000 2003-01-01 0.016996999999999998 2004-01-01 0.026681000000000000 2005-01-01 0.017750000000000000 2006-01-01 0.027149000000000000 2007-01-01 0.011395000000000000 2008-01-01 0.007587999999999999 2009-01-01 0.033972000000000000 2010-01-01 0.048194000000000000 2011-01-01 0.033512000000000000 2012-01-01 0.037072000000000000 2013-01-01 0.038081000000000000 2014-01-01 0.052774000000000000 2015-01-01 0.069552000000000000 2016-01-01 0.057541999999999996