Table:
text: Indianapolis Colts draft history
1989 Draft
1989 Draft
Round Pick_ Overall Name_ Position_ College
1 22 22 Andre Rison Wide Receiver Michigan State
3 16 72 Mitchell Benson Defensive Tackle TCU
4 15 99 Pat Tomberlin Guard Florida State
6 16 155 Quintus McDonald Linebacker Penn State
7 15 182 Ivy Joe Hunter Running Back Kentucky
7 18 185 Charles Washington Defensive Back Cameron
8 17 212 Kurt Larson Linebacker Michigan State
9 16 239 William Mackall Wide Receiver Tennessee-Martin
10 15 266 Jim Thompson Offensive Tackle Auburn
11 17 296 Wayne Johnson Quarterback Georgia
12 7 314 William DuBose Running Back South Carolina State
12 16 323 Steve Taylor Quarterback Nebraska

Question: What is the overall pick average with a pick number less than 15 for the 1989 Indianapolis Colts draft history?