| 1973 9 | 1994 9 1999 7 | | | | | 1991.09 — 1994.07 | 1994.09 — 1999.08 | 1999.08 — 2002.10 | | 2002.10 — 2005.01 | 2000.09 — 2002.12 | | 2005.01 — 2007.03 | | 2007.03 — 2007.12 | | 2007.12 — 2009.12 | | 2009.12 — 2012.04 | | 2012.04 — 2016.06 | | 2016.06 — 2016.07 | | | 2016.07 — 2017.06 | | | 2017.06 — 2018.09 | | 2018.09 — | |