Year | Number of sitting weeks | Number of sittings• | Total hours of sitting* | Average length of sitting h min | Number of sittings after midnight | |
1901† | 31 | 113 | 866 | 7 40 | 7 | |
1902 | 31 | 107 | 796 | 7 26 | 3 | |
1903† | 22 | 78 | 577 | 7 24 | 3 | |
1904 | 36 | 122 | 902 | 7 23 | 3 | |
1905 | 24 | 90 | 831 | 9 14 | 12 | |
1906† | 19 | 70 | 590 | 8 25 | 6 | |
1907 | 25 | 97 | 808 | 8 20 | 16 | |
1908 | 26 | 91 | 680 | 7 29 | 9 | |
1909 | 26 | 98 | 793 | 8 05 | 7 | |
1910† | 22 | 83 | 748 | 9 01 | 6 | |
1911 | 16 | 61 | 559 | 9 09 | 5 | |
1912 | 27 | 105 | 966 | 9 12 | 8 | |
1913† | 20 | 74 | 562 | 7 36 | 7 | |
1914† | 21 | 61 | 504 | 8 15 | 3 | |
1915 | 25 | 72 | 531 | 7 23 | 7 | |
1916 | 12 | 32 | 260 | 8 07 | 1 | |
1917† | 19 | 52 | 460 | 8 51 | 7 | |
1918 | 28 | 86 | 872 | 10 08 | 9 | |
1919† | 17 | 51 | 358 | 7 01 | 2 | |
1920 | 35 | 114 | 842 | 7 23 | 6 | |
1921 | 27 | 93 | 720 | 7 44 | 7 | |
1922† | 16 | 53 | 432 | 8 09 | 3 | |
1923 | 13 | 52 | 479 | 9 12 | 8 | |
1924 | 25 | 83 | 632 | 7 37 | 6 | |
1925† | 13 | 36 | 389 | 10 49 | 4 | |
1926 | 24 | 84 | 646 | 7 41 | 5 | |
1927 | 17 | 59 | 523 | 8 51 | 4 | |
1928† | 18 | 62 | 500 | 8 04 | 5 | |
1929† | 16 | 54 | 474 | 8 47 | 8 | |
1930 | 28 | 98 | 781 | 7 58 | 11 | |
1931† | 29 | 94 | 744 | 7 55 | 10 | |
1932 | 23 | 73 | 652 | 8 56 | 14 | |
1933 | 20 | 67 | 630 | 9 24 | 16 | |
1934† | 12 | 35 | 297 | 8 29 | 9 | |
1935 | 16 | 55 | 460 | 8 21 | 12 | |
1936 | 22 | 71 | 539 | 7 35 | 15 | |
1937† | 9 | 29 | 257 | 8 52 | 5 | |
1938 | 22 | 66 | 602 | 9 07 | 13 | |
1939 | 15 | 51 | 446 | 8 45 | 11 | |
1940† | 15 | 43 | 402 | 9 21 | 5 | |
1941 | 20 | 50 | 396 | 7 55 | 11 | |
1942 | 17 | 45 | 404 | 8 59 | 11 | |
1943† | 16 | 48 | 414 | 8 37 | 14 | |
1944 | 17 | 57 | 517 | 9 04 | 9 | |
1945 | 26 | 90 | 749 | 8 19 | 8 | |
1946† | 19 | 65 | 566 | 8 42 | 15 | |
1947 | 26 | 92 | 795 | 8 39 | 8 | |
1948 | 27 | 90 | 684 | 7 36 | 9 | |
1949† | 22 | 80 | 627 | 7 50 | 5 | |
1950 | 28 | 83 | 803 | 9 40 | 12 | |
1951† | 17 | 56 | 511 | 9 08 | 11 | |
1952 | 23 | 74 | 667 | 9 01 | 16 | |
1953 | 17 | 61 | 533 | 8 45 | 5 | |
1954† | 17 | 48 | 460 | 9 36 | 3 | |
1955† | 18 | 52 | 511 | 9 50 | 4 | |
1956 | 27 | 79 | 771 | 9 46 | 8 | |
1957 | 21 | 63 | 644 | 10 13 | 12 | |
1958† | 17 | 48 | 491 | 10 14 | 9 | |
1959 | 24 | 71 | 711 | 10 01 | 18 | |
1960 | 25 | 74 | 770 | 10 24 | 22 | |
1961† | 19 | 55 | 575 | 10 27 | 21 | |
1962 | 22 | 66 | 688 | 10 25 | 16 | |
1963† | 18 | 53 | 530 | 9 59 | 10 | |
1964 | 22 | 65 | 656 | 10 06 | 10 | |
1965 | 23 | 76 | 765 | 10 04 | 11 | |
1966† | 17 | 55 | 531 | 9 39 | 9 | |
1967 | 21 | 62 | 646 | 10 25 | 20 | |
1968 | 23 | 67 | 703 | 10 29 | 20 | |
1969† | 17 | 51 | 532 | 10 26 | 18 | |
1970 | 20 | 73 | 736 | 10 05 | 23 | |
1971 | 22 | 74 | 742 | 10 02 | 29 | |
1972† | 21 | 60 | 680 | 11 20 | 16 | |
1973 | 25 | 81 | 913 | 11 16 | — | |
1974† | 21 | 62 | 678 | 10 56 | 1 | |
1975† | 23 | 69 | 743 | 10 46 | — | |
1976 | 25 | 79 | 781 | 9 53 | — | |
1977† | 22 | 68 | 676 | 9 57 | 6 | |
1978 | 22 | 75 | 747 | 9 58 | 3 | |
1979 | 22 | 68 | 671 | 9 52 | 3 | |
1980† | 17 | 51 | 525 | 10 18 | 9 | |
1981 | 21 | 62 | 627 | 10 07 | 6 | |
1982 | 19 | 53 | 554 | 10 28 | 8 | |
1983† | 17 | 49 | 533 | 10 52 | 3 | |
1984† | 13 | 52 | 551 | 10 35 | 10 | |
1985 | 18 | 66 | 681 | 10 20 | 13 | |
1986 | 20 | 79 | 781 | 10 22 | 1 | |
1987† | 19 | 74 | 746 | 10 05 | 1 | |
1988 | 21 | 65 | 701 | 10 47 | 10 | |
1989 | 18 | 59 | 658 | 11 09 | 12 | |
1990† | 12 | 38 | 433 | 11 23 | 5 | |
1991 | 21 | 67 | 774 | 11 33 | 10 | |
1992 | 19 | 60 | 689 | 11 29 | 12 | |
1993† | 14 | 46 | 524 | 11 24 | 8 | |
1994 | 18 | 68 | 632 | 9 18 | 1 | 61 |
1995 | 18 | 70 | 637 | 9 06 | — | 108 |
1996† | 16 | 61 | 647 | 10 37 | 3 | 90 |
1997 | 20 | 76 | 800 | 10 31 | 2 | 171 |
1998† | 15 | 54 | 560 | 10 22 | — | 97 |
1999 | 19 | 73 | 710 | 9 43 | — | 137 |
2000 | 19 | 73 | 714 | 9 47 | 2 | 128 |
2001† | 15 | 56 | 526 | 9 23 | 1 | 110 |
2002 | 18 | 69 | 667 | 9 40 | 2 | 183 |
2003 | 20 | 74 | 682 | 9 13 | 1 | 191 |
2004† | 16 | 59 | 594 | 10 05 | — | 152 |
2005 | 18 | 67 | 615 | 9 11 | 1 | 179 |
2006 | 18 | 68 | 630 | 9 16 | — | 229 |
2007† | 14 | 50 | 452 | 9 03 | — | 148 |
2008 | 18 | 69 | 657 | 9 32 | 2 | 291 |
2009 | 18 | 68 | 819 | 12 03 | 1 | 268 |
2010† | 15 | 55 | 609 | 11 04 | — | 255 |
2011 | 18 | 64 | 740 | 11 34 | 2 | 378 |
• A sitting on occasion may extend over more than one day, or even several days, during which period there may be lengthy suspensions.
* Does not include sittings in the Federation Chamber. Includes time expended in meal breaks and other suspensions.
† Years in which elections for the House of Representatives were held.
‡ First sitting of Main Committee 8 June 1994. Main Committee renamed Federation Chamber February 2012. Includes time expended in suspensions.