Year	Hours Per Week
1997	34.4
1998	34.5
1999	34.8
2000	34.4
2001	34.4
2002	34.4
2003	34.4
2004	35.1
2005	34.8
2006	34.4
2007	34
2008	33.9
2009	33
2010	33
2011	33
2012	33
2013	33
2014	33
2015	33
2016	33
2017	33