Year Percent 2000-01-01 0.094904999999999990 2001-01-01 0.142213000000000000 2002-01-01 0.146746000000000020 2003-01-01 0.059635000000000000 2004-01-01 0.239141000000000000 2005-01-01 0.496185000000000040 2006-01-01 0.855817000000000000 2007-01-01 0.737166000000000000 2008-01-01 0.238955000000000030 2009-01-01 0.041579000000000005 2010-01-01 0.019491000000000000 2011-01-01 0.015910000000000000 2012-01-01 0.011601000000000000