Year Percent 1995-01-01 40.89093781 1996-01-01 33.57778931 1997-01-01 32.35516739 1998-01-01 36.55254364 1999-01-01 27.98747635 2000-01-01 38.10719299 2001-01-01 30.36148643 2002-01-01 34.88534546 2003-01-01 28.10294533 2004-01-01 27.21599960 2005-01-01 96.66270447 2006-01-01 91.48207855 2007-01-01 72.99536133 2008-01-01 48.84114456