Year	Hours Per Week
2005	39.8184
2006	40.6446
2007	41.4032
2008	39.0812
2009	37.0679
2010	36.591
2011	39.2032
2012	39.3313
2013	37.8937
2014	39.3739
2015	39.2471
2016	40.1722
2017	38.9598