Year	Hours Per Week
2001	41.1921
2002	41.0634
2003	39.4886
2004	41.0284
2005	40.8335
2006	40.8844
2007	40.493
2008	40.3531
2009	40.4122
2010	39.9271
2011	41.2517
2012	39.2095
2013	38.3549
2014	37.8488
2015	38.3331
2016	38.5025
2017	39.0482