AWTA. Imo the best decade for fast bowling (that I've observed) has been the 90s where most teams had at least 2 very good to great fast bowlers for most of he decade, some in the lineup at the same time:
RSA: De Villiers, Donald, Pollock
Oz: Fleming, Reifel, Mcgrath, Gillespie, Mcdermott
Pak: Wasim, Waqar, Shoaib
WI: Walsh Amby, Bishop
Eng: Gough, Fraser, Caddick
Zim: Streak
Ind: Prasad, Srinath
SL: Vaas
Nz: Cairns, Bond (i know very briefly).
Yes I know many of the above bowlers played/debuted towards the tail end of the decade still doesn't detract from my overall point.