Year Percent 2000-01-01 12.81680000000000000 2001-01-01 11.55990000000000000 2002-01-01 4.01035999999999950 2003-01-01 0.52573000000000000 2004-01-01 11.77140000000000000 2005-01-01 13.48260000000000000 2006-01-01 18.57310000000000000 2007-01-01 4.36426000000000000 2008-01-01 0.84494900000000000 2009-01-01 0.37074100000000000 2010-01-01 0.33503800000000000 2011-01-01 0.15196800000000002 2012-01-01 0.24646600000000000