| 1964 2 | 1983 8 1989 | 12 | 1981 .09 1983.08 | | 1983 .08 1984.12 | | 1984 .12 1986.01 | | 1986 .01 1996.08 | | | 1988 .01 1989.12 | | | 1991.08 1993.12 | | 1996 .08 2000.12 | | | 2000 .12 2003.10 | | 2003.03 2003.10 | | 2003.10 2011.05 | | | 2011 .05 2016.07 | | | 2016.07 2017 .03 | | | 2017.03 2017.03 | | | 2017.03 | |