The information given in the table is available in the sessional information digests:
http://www.publications.parliament.uk/pa/cm/cmsid.htm
Hours Minutes Hours Minutes Hours Minutes 1980-81 1,485 11 n/a n/a 1990-91 1,373 53 393 64 65 50 1996-97 717 45 221 41 45 88 1997-98 2,117 36 859 45 42 65 1998- 99 1,378 50 458 64 36 62 1999-2000 1,442 41 640 66 31 88 2000-01 690 27 283 36 26 82 2001-02 1,540 40 676 93 24 58 2002-03 1,287 15 484 53 18 12 2003-04 1,215 19 460 89 14 35 2004-05 531 16 216 15 9 30 2005-06 1,572 07 701 79 18 09 2006-07 1,118 52 367 04 17 61 n/a = Not available. Up until the 1984-85 session the sitting hours were not broken down. Therefore, only the total number of sitting hours can be provided.
The number of hours considering primary legislation and delegated legislation in committee can be provided only at disproportionate cost.