Month	Hours per Week
2001-01-01	37.3
2001-02-01	37.8
2001-03-01	37.0
2001-04-01	35.8
2001-05-01	35.4
2001-06-01	35.3
2001-07-01	34.8
2001-08-01	35.2
2001-09-01	39.6
2001-10-01	36.9
2001-11-01	34.8
2001-12-01	38.3
2002-01-01	35.1
2002-02-01	41.4
2002-03-01	40.0
2002-04-01	40.2
2002-05-01	39.9
2002-06-01	44.0
2002-07-01	38.5
2002-08-01	42.6
2002-09-01	41.7
2002-10-01	39.9
2002-11-01	43.5
2002-12-01	43.9
2003-01-01	40.7
2003-02-01	44.5
2003-03-01	40.2
2003-04-01	40.8
2003-05-01	40.7
2003-06-01	42.8
2003-07-01	40.0
2003-08-01	43.9
2003-09-01	40.0
2003-10-01	39.6
2003-11-01	44.3
2003-12-01	40.6
2004-01-01	41.9
2004-02-01	43.5
2004-03-01	39.7
2004-04-01	41.8
2004-05-01	42.1
2004-06-01	41.2
2004-07-01	37.0
2004-08-01	39.0
2004-09-01	37.7
2004-10-01	37.1
2004-11-01	36.7
2004-12-01	35.7
2005-01-01	37.7
2005-02-01	36.7
2005-03-01	33.9
2005-04-01	36.5
2005-05-01	36.6
2005-06-01	36.0
2005-07-01	37.2
2005-08-01	34.9
2005-09-01	38.3
2005-10-01	37.4
2005-11-01	36.1
2005-12-01	36.2
2006-01-01	36.0
2006-02-01	36.0
2006-03-01	36.4
2006-04-01	42.5
2006-05-01	37.1
2006-06-01	39.1
2006-07-01	40.4
2006-08-01	37.8
2006-09-01	38.6
2006-10-01	39.1
2006-11-01	38.6
2006-12-01	37.9
2007-01-01	36.9
2007-02-01	40.7
2007-03-01	40.5
2007-04-01	40.7
2007-05-01	40.2
2007-06-01	40.8
2007-07-01	40.5
2007-08-01	40.8
2007-09-01	42.4
2007-10-01	39.9
2007-11-01	39.6
2007-12-01	42.4
2008-01-01	39.2
2008-02-01	39.4
2008-03-01	39.9
2008-04-01	39.4
2008-05-01	39.3
2008-06-01	40.0
2008-07-01	39.1
2008-08-01	38.6
2008-09-01	38.0
2008-10-01	39.2
2008-11-01	40.5
2008-12-01	39.8
2009-01-01	39.3
2009-02-01	40.0
2009-03-01	39.2
2009-04-01	39.5
2009-05-01	38.6
2009-06-01	39.1
2009-07-01	41.0
2009-08-01	40.3
2009-09-01	40.4
2009-10-01	39.8
2009-11-01	39.3
2009-12-01	39.5
2010-01-01	39.6
2010-02-01	39.7
2010-03-01	39.3
2010-04-01	38.3
2010-05-01	40.0
2010-06-01	46.7
2010-07-01	44.3
2010-08-01	46.8
2010-09-01	43.7
2010-10-01	43.7
2010-11-01	43.5
2010-12-01	43.3
2011-01-01	41.2
2011-02-01	42.8
2011-03-01	42.1
2011-04-01	42.5
2011-05-01	44.5
2011-06-01	40.3
2011-07-01	40.2
2011-08-01	40.8
2011-09-01	40.5
2011-10-01	40.8
2011-11-01	40.3
2011-12-01	40.5
2012-01-01	43.0
2012-02-01	40.7
2012-03-01	39.9
2012-04-01	39.5
2012-05-01	40.2
2012-06-01	40.5
2012-07-01	42.3
2012-08-01	40.5
2012-09-01	40.2
2012-10-01	41.1
2012-11-01	41.3
2012-12-01	41.3
2013-01-01	42.5
2013-02-01	43.1
2013-03-01	42.3
2013-04-01	41.5
2013-05-01	41.6
2013-06-01	41.3
2013-07-01	42.4
2013-08-01	43.0
2013-09-01	43.1
2013-10-01	43.6
2013-11-01	39.9
2013-12-01	44.0