Year	Hours Per Week
1992	31.0496
1993	31.0671
1994	31.0364
1995	30.927
1996	32.7282
1997	32.7242
1998	32.3761
1999	32.2353
2000	32.023
2001	31.9148
2002	31.0463
2003	31.3246
2004	31.0375
2005	32.0217
2006	32.3067
2007	32.2396
2008	32.1615
2009	31.9214
2010	31.9637
2011	32.2503
2012	32.0398
2013	31.9269
2014	32.2576
2015	32.0923
2016	32.4296
2017	32.3921