(20-08-1961) to (18-12-1967)
(22-12-1967) to (10-02-1971)(1st Term)
(10-02-1971) to (01-04-1972)
(02-04-1972) to (23 -10-1972)
(23 -10-1972) to (23-02-1973)(2nd Term)
(24-02-1973) to (16-07-1975)
(18--07-1975) to (16-07-1979)
(09-03-1979) to (30-11-1980)
(24-12-1980) to (06-05-1986)
(07-05-1986) to (31-12-1991)
(01-01-1992)to (05-07-1993)
(31-07 -1993) to (04-07 -1997)
(05-07 -1997) to (22-04-1998)
(22-04-1998) to (22-08-1998)
(25-08-1998) to (31-03-2003)
(01-04-2003) to (30-04-2003)
(07-05-2003) to (31-10-2004)
(03-12-2004) to (31-07-2006)
(01-08-2006) to (31-08-2011)
(31-07-2013) to (05-08-2015)
(06-08-2015) to 31-05-2017
(01-06-2017) to (01-05-2018)
(20-08-2018) to (25-06-2019)
(26-06-2019) to (04-04-2023)
(04-04-2023) to Till Date
