Year	Hours Per Week
1992	39.2505
1993	38.9517
1994	39.0154
1995	38.864
1996	38.9113
1997	38.7167
1998	38.4786
1999	38.349
2000	38.2529
2001	37.988
2002	37.6136
2003	37.1207
2004	37.117
2005	37.0682
2006	36.2756
2007	36.324
2008	36.2264
2009	35.58
2010	35.8175
2011	35.8957
2012	35.7781
2013	35.5324
2014	35.5785
2015	35.4614
2016	35.5338
2017	35.2487