Year Percent 1994-01-01 0.017072999999999998 1995-01-01 0.017072999999999998 1996-01-01 0.077708000000000000 1997-01-01 0.767538000000000000 1998-01-01 1.350740000000000000 1999-01-01 2.197050000000000000 2000-01-01 2.189450000000000000 2001-01-01 2.870690000000000000 2002-01-01 3.007609999999999700 2003-01-01 3.088620000000000000 2004-01-01 2.379380000000000000 2005-01-01 1.926350000000000000 2006-01-01 1.870050000000000000 2007-01-01 0.805208000000000000 2008-01-01 0.372424000000000000 2009-01-01 0.792201000000000000 2010-01-01 1.066770000000000000 2011-01-01 1.143230000000000000 2012-01-01 2.450720000000000000 2013-01-01 2.480380000000000000 2014-01-01 2.489620000000000000 2015-01-01 2.126320000000000000 2016-01-01 2.154590000000000200