If you count Peru, you should count Bulgaria and Hungary as well since they were 3rd and 4th in the previous edition.
By the way after the fall of Soviet Union, Russia managed to reach finals twice (losing both finals with small margins at tiebreak) and semis 3 times.
The fall of the Soviet Union was an arbitrary point that I made up. (I included Russia in the powerhouse group)
Either way my point still stands.