Year Percent 1995-01-01 0.7113560000000000 1996-01-01 0.7178790000000000 1997-01-01 1.9956900000000002 1998-01-01 1.8993200000000001 1999-01-01 1.8044500000000000 2000-01-01 1.7833299999999999 2001-01-01 1.6475900000000000 2002-01-01 0.8446120000000000 2003-01-01 0.7746430000000001 2004-01-01 0.3959320000000000 2005-01-01 0.2452500000000000 2006-01-01 0.0498430000000000 2007-01-01 0.0498430000000000 2008-01-01 0.0498430000000000 2009-01-01 0.0498430000000000 2010-01-01 0.0498430000000000 2011-01-01 0.5237360000000000