Year	Hours Per Week
1994	38
1995	36.5
1996	38.3
1997	40.9902
1998	40.2382
1999	40.1617
2000	40.3624
2001	40.2719
2002	41.3358
2003	41.3517
2004	41.2317
2005	40.5282
2006	40.2159
2007	40.2645
2008	40.0328
2009	39.8189
2010	39.5663
2011	39.4478
2012	39.3159
2013	39.2152
2014	39.1695
2015	38.68
2016	39.0056
2017	39.034