Year	Hours Per Week
2002	41.2031
2003	40.3776
2004	47.6478
2005	48.3969
2006	44.7522
2007	41.599
2008	39.9027
2009	39.166
2010	38.4544
2011	38.5781
2012	38.562
2013	38.693
2014	38.3409
2015	39.0245
2016	38.4009
2017	38.5571