| 1970 12 | | 1996 1 2004 | 6 | | | | | | 1996.01 - 2000.02 | | 2000.02 - 2003.05 | | 2003.05 - 2004.04 | | 2004.05 - 2006.07 | | 2006.07 - 2008.04 | | 2008.04 - 2011.02 | | 2011.02 - 2017.01 | | 2017.01 - 2018.08 | | 2018.08 - 2021.08 | | 2021.08 - 2023.07 | | 2023.07 - | |