Fudge's Timeline

[Arya]

No: HPFGUIDX 98283

I was just looking something up in the Lexicon and found this:

[According to an article in The Quibbler from September, 1995, Fudge
had been made Minister of Magic "five years ago," which would have
been
in 1990 (OP10).]  
http://www.hp-lexicon.org/wizards/dumbledore.html#timeline

Now this did not seem to jive at all with my memory of what Sirius
says in GoF.  Indeed, in Ch 27, Sirius talks about how the backlash
from 
Crouch sending his son to prison and how this caused Crouch to be
shunted 
aside, making way for  Fudge to be the next MoM.  This, we know from
Ch 
30, happened 'after Voldemort's fall from power, just when everyone
thought 
they were safe'.   I was assuming there were only two to three years
in 
between the Crouch trial and the new MoM.  However, the Lexicon says
it 
was much more--not until 1990.

Now, the Lexicon reference is Ch 10 in OotP, but I cannot find where
it says 
Fudge had been MoM for 5 years in this chapter.  Can anyone else find
this?  
What impressions do you have as to how long Fudge was MoM?

Confused, 
Arya