Table:
text: Greg Norman
Summary
Summary
Tournament Wins Top_5 Top_10 Top_25 Events Cuts_made
Masters Tournament 0 8 9 12 23 17
U.S. Open 0 3 5 7 19 13
The Open Championship 2 4 10 17 27 23
PGA Championship 0 5 6 12 22 18
Totals 2 20 30 48 91 71

Question: In Greg Norman's summary, how many top 25 are associated with more than 91 events?