? -- August 30, 1878 August 30, 1878 -- February 4, 1879 February 4, 1879 -- June 25, 1879 June 25, 1879 -- February 3, 1880 February 3, 1880 -- April 5, 1881 April 5, 1881 -- January 29, 1889 January 29, 1889 -- January 19, 1891 January 19, 1891 -- September 14, 1891 September 14, 1891 -- January 22, 1896 January 22, 1896 -- July 7, 1897 July 7, 1897 -- April 7, 1901 April 7, 1901 -- September 9, 1904 September 9, 1904 -- October 23, 1904 October 23, 1904 -- May 1, 1905 May 1, 1905 -- May 6, 1905 May 6, 1905 -- April 1, 1907 April 1, 1907 -- ? , 1911 1911 -- 1914 1914 -- 1919 1919 -- 1921 1921 -- 1933 1933 -- 1934 1934 -- 1937 1937 -- 1941 1941 -- 1942 1942 -- ? ? ,1942 -- November 16, 1955 November 16, 1955 -- August 31, 1969 August 31, 1969 -- August 1, 1977 August 1, 1977 -- February 8, 1983 February 8, 1983 -- May 17, 1991 May 17, 1991 -- August 10, 1997 August 10, 1997 -- August 15, 2003 August 16, 2003 -- January 22, 2004 January 23, 2004 -- Present | 
