Year	Hours Per Week
2001	43.5
2002	43.4
2003	43.5
2004	43.1
2005	43.4
2006	43.3
2007	43.1
2008	40.75991
2009	39.15359
2010	39.06254
2011	40.8673
2012	39.3665
2013	39.5481
2014	38.9593
2015	39.0801
2016	38.1674
2017	37.9156