Year	Hours per Week
2001-01-01	34.5
2002-01-01	36.2
2003-01-01	36.5
2004-01-01	35.4
2005-01-01	35.4
2006-01-01	34.8
2007-01-01	36.9
2008-01-01	37.2
2009-01-01	36.6
2010-01-01	36.3
2011-01-01	34.3
2012-01-01	33.9
2013-01-01	34.2
2014-01-01	34.2
2015-01-01	36.0
2016-01-01	36.8