| 1972 4 | 2001 6 | 1997 8 | 2010 | | | | 1997 . 082006 . 12 | 2005 . 072006 . 12 | | 2006 . 122011 . 10 | | 2011 . 102014 . 10 | | | 2014 . 102016 . 06 | | 2016 . 062019 . 05 | | 2017 11 | 2019 . 052021 . 06 | | 2021 . 062021 . 07 | | |