Table:
text: 2005 PGA Tour Qualifying School graduates
2006 Results
2006 Results
Player Starts Cuts_made Best_finish Money_list_rank Earnings_
J. B. Holmes 26 16 Win 59 1487604
Alex Čejka 30 16 T3 145 525484
Nicholas Thompson 32 15 T6 180 264717
D. A. Points 28 12 T10 162 405984
Tom Byrum 11 3 T16 215 101094
Nick Watney 29 19 T5 (twice) 75 1243816
Daisuke Maruyama 29 14 T3 95 956874
Michael Allen 25 17 T11 153 470946
Hunter Mahan 29 21 T2 83 1107457
Will MacKenzie 29 16 Win 100 879965
Robert Garrigus 28 15 T4 144 537595
Marco Dawson 27 16 T5 142 545076
John Engler 27 7 T39 222 72964

Question: What is the minimum number of cuts for Hunter Mahan among 2005 PGA Tour Qualifying School graduates?