Year Number 2004-01-01 7288000 2005-01-01 7167000 2006-01-01 7089000 2007-01-01 6979000 2008-01-01 7079000 2009-01-01 7269000 2010-01-01 6400000 2011-01-01 6086000 2012-01-01 5926000 2013-01-01 5816000