Year	Hours per Week
2001-01-01	37.3
2002-01-01	38.2
2003-01-01	39.2
2004-01-01	38.1
2005-01-01	36.0
2006-01-01	34.0
2007-01-01	35.5
2008-01-01	35.8
2009-01-01	33.1
2010-01-01	34.9
2011-01-01	35.5
2012-01-01	36.2