| | | | | | | | | | | | | | | | | | | | | | 1976 12 | | 1993 8 | 1998 12 | | | 1990.9 — 1993.6 | | 1993.8 — 1996.10 | | 1996.4 — 2000.12 | | 1996.10 — 2001.2 | | 2000.7 — 2003.7 | | 2001.2 — 2003.5 | | 2003.5 — 2004.2 | | 2004.3 — 2004.10 | | 2004.10 — 2009.1 | | 2009.1 — 2011.5 | | 2008.9 — 2011.7 | | 2011.5 — 2016.7 | | | 2011.4 — 2013.6 | | | 2016.7 — | | |