| | | | | | | | | | | | | | | | | | | | | | | | | | | 1970 1 | 1991.07---1992.07 | | 1992.07---2002.03 | | 2002.03---2004.07 | | 2004.07---2005.11 | | 2005.11---2008.05 | | 2008.05 ---2011.08 | | 2011.08 ---2012.11 | | | 2012.11 --- 2013.04 | | | 2013.04 --- 2021.07 | 2016.04 2016.12 | | 2021.07 --- 2022.01 | | | 2022.01 --- | | | | | | | |