OK...just because I felt like it, and the talk about Guerrero holding the belt got me thinking, I decided to do this.
Here, is a year by year breakdown of the times the current WWE Championship has changed, going all the way back to the WWWF days.
Also, these are only the officially recognized reigns, as I had checked numerous times back on the old WWF Title Histories site.
1963:
"Nature Boy" Buddy Rogers given the title when WWWF is formed and splits away from the NWA in April.
Bruno Sammartino defeats "Nature Boy" Buddy Rogers for the title on May 17
1971:
Ivan Koloff defeats Bruno Sammartino on January 18.
Pedro Morales defeats Ivan Koloff on February 8.
1973:
Stan "The Man" Stasiak defeats Pedro Morales on December 1.
Bruno Sammartino defeats Stan "The Man" Stasiak on December 10.
1977:
"Superstar" Billy Graham defeats Bruno Sammartino on April 30.
1978:
Bob Backlund defeats "Superstar" Billy Graham on February 20.
1979:
Antonio Inoki defeats Bob Backlund on November 30.
Bob Backlund defeats Bobby Duncam for the then-vacent title on December 12.
1983:
The Iron Sheik defeats Bob Backlund on December 26.
1984:
Hulk Hogan defeats The Iron Sheik on January 23.
1988:
Andre the Giant (sorta) defeats Hulk Hogan on February 5, vacates by accident minutes later.
"Macho Man" Randy Savage wins a 14-Man Tournament for vacent championship on March 27.
1989:
Hulk Hogan defeats "Macho Man" Randy Savage on April 2.
1990:
Ultimate Warrior defeats Hulk Hogan on April 1.
1991:
Sgt. Slaughter defeats Ultimate Warrior on January 19
Hulk Hogan defeats Sgt. Slaughter on March 24
The Undertaker defeats Hulk Hogan on November 27
Hulk Hogan defeats The Undertaker on December 3, but is stripped of the title the same night due to severe contraversy.
1992:
"Nature Boy" Ric Flair wins 30-Man Royal Rumble for vacent championship on January 19.
"Macho Man" Randy Savage defeats "Nature Boy" Ric Flair on April 5.
"Nature Boy" Ric Flair defeats "Macho Man" Randy Savage on September 1.
Bret "Hitman" Hart defeats "Nature Boy" Ric Flair on October 12.
1993:
Yokozuna defeats Bret "Hitman" Hart on April 4.
Hulk Hogan defeats Yokozuna minutes later.
Yokozuna defeats Hulk Hogan on June 13.
1994:
Bret "Hitman" Hart defeats Yokozuna on March 20
Bob Backlund defeats Bret "Hitman" Hart on November 23
Diesel defeats Bob Backlund on November 26
1995:
Bret "Hitman" Hart defeats Diesel on November 19.
1996:
Shawn Michaels defeats Bret "Hitman" Hart on March 31.
Sycho Sid defeats Shawn Michaels on November 17.
1997:
Shawn Michaels defeats Sycho Sid on January 19
Bret "Hitman" Hart defeats Undertaker, Vader, and "Stone Cold" Steve Austin in Final Four Match for vacent title on February 16.
Sycho Sid defeats Bret "Hitman" Hart on February 17.
The Undertaker defeats Sycho Sid on March 23.
Bret "Hitman" Hart defeats The Undertaker on August 3.
Shawn Michaels (sorta) defeats Bret "Hitman" Hart on November 9.
1998:
"Stone Cold" Steve Austin defeats Shawn Michaels on March 29
Kane defeats "Stone Cold" Steve Austin on June 28
"Stone Cold" Steve Austin defeats Kane on June 29
The Rock wins a tournament for the vacent title on November 15
Mankind defeats The Rock on December 29.
1999:
The Rock defeats Mankind on January 24
Mankind defeats The Rock on January 26
The Rock defeats Mankind on February 15
"Stone Cold" Steve Austin defeats The Rock on March 28
The Undertaker defeats "Stone Cold" Steve Austin on May 23
"Stone Cold" Steve Austin defeats The Undertaker on June 28
Mankind defeats "Stone Cold" Steve Austin and Triple H in a Triple Threat Match on August 22
Triple H defeats Mankind on August 23
Vince McMahon defeats Triple H on September 14
Triple H wins a 6 Pack Challenge for vacent title over The Rock, Kane, Mankind, Big Show, and British Bulldog on September 26
Big Show defeats Triple H and The Rock in a triple threat match on November 14
2000:
Triple H defeats Big Show on January 3
The Rock defeats Triple H on April 30
Triple H defeats The Rock on May 21
The Rock, teaming with Undertaker and Kane, defeats Triple H, Vince McMahon, and Shane McMahon on June 25
Kurt Angle defeats The Rock on October 22
2001:
The Rock defeats Kurt Angle on February 25
"Stone Cold" Steve Austin defeats The Rock on April 1
Kurt Angle defeats "Stone Cold" Steve Austin on September 23
"Stone Cold" Steve Austin defeats Kurt Angle on October 8
Chris Jericho defeats "Stone Cold" Steve Austin on December 9
2002:
Triple H defeats Chris Jericho on March 17
Hulk Hogan defeats Triple H on April 21
The Undertaker defeats Hulk Hogan on May 19
The Rock defeats The Undertaker and Kurt Angle in a triple threat match on July 21
Brock Lesnar defeats The Rock on August 25
Big Show defeats Brock Lesnar on November 17
Kurt Angle defeats Big Show on December 15
2003:
Brock Lesnar defeats Kurt Angle on March 30
Kurt Angle defeats Brock Lesnar and Big Show in a triple threat match on July 27
Brock Lesnar defeats Kurt Angle on September 16
2004:
Eddie Guerrero defeats Brock Lesnar on February 15.
Whew...long list. But, I felt like getting it out.
Good thing it seems like the 6 or more title changes a year trend is starting to go away at last.