June 2, 1986 – February 6, 1992
February 7, 1992 – January 26, 1996
January 29, 1996 – August 11, 1996
Aug. 12, 1996 – Nov. 30, 1997
December 30, 1997 – June 30, 1998
July 6, 1998 – March 4, 2001
March 5, 2001 – August 31, 2007
September 1, 2007 – March 2, 2010
March 5, 2010 – July 31, 2010
August 17, 2010 – Nov 20, 2016
November 21, 2016 – Sept. 20, 2017
September 25, 2017 – June 30, 2022
September 2, 2022 - April 15, 2023
April 20, 2023 – to present