The top 12 schools in wins all-time, how often should they make the playoffs in a 10-year period?

[saturdaysarebetter]

The top 12 schools in wins all-time, how often should they make the playoffs in a 10-year period? Wha's an acceptable/expected number of those schools? 10 out of 10? 9 out of 10? 8 out of 10? Etc.

Those schools are:
Michigan
Alabama
Ohio State
Texas
Notre Dame
Oklahoma
Penn State
Nebraska
Georgia
Tennessee
USC
LSU

 

[LionsAndBears]

7.5...3 out of every 4 years is reasonable.

 

[BobPSU92]

Nonce.