| Insider | Price | Amount | Total Value | Remaining Holdings | Date | Form 4 | 
   | Officer | $67.74 | 7,000 | $474,180.00 | 72,372 | 2011-10-10 | Filing | 
  | Officer | $66.51 | 17,000 | $1,130,670.00 | 72,372 | 2011-09-27 | Filing | 
  | Officer | $65.08 | 5,000 | $325,400.00 | 72,372 | 2011-09-15 | Filing | 
  | Officer | $64.50 | 3,000 | $193,500.00 | 72,372 | 2011-09-14 | Filing | 
  | Officer | $80.45 | 4,500 | $362,025.00 | 13,908 | 2011-03-25 | Filing | 
  | Officer | $77.50 | 14,562 | $1,128,555.00 | 13,908 | 2011-03-24 | Filing | 
  | Officer, Director | $77.25 | 7,500 | $579,375.00 | 0 | 2011-03-22 | Filing | 
  | Officer, Director | $78.33 | 7,500 | $587,475.00 | 0 | 2011-03-09 | Filing | 
  | Officer | $78.33 | 3,500 | $274,155.00 | 4,976 | 2011-03-09 | Filing | 
  | Officer, Director | $77.62 | 10,000 | $776,200.00 | 0 | 2011-03-08 | Filing | 
  | Officer, Director | $77.53 | 5,000 | $387,650.00 | 0 | 2011-02-18 | Filing | 
  | Officer | $77.53 | 3,000 | $232,590.00 | 0 | 2011-02-18 | Filing | 
  | Officer | $77.21 | 18,000 | $1,389,780.00 | 10,218 | 2011-02-18 | Filing | 
  | Officer | $76.91 | 5,057 | $388,933.87 | 10,218 | 2011-02-17 | Filing | 
  | Officer, Director | $77.09 | 5,000 | $385,450.00 | 0 | 2011-02-17 | Filing | 
  | Officer, Director | $76.69 | 20,000 | $1,533,800.00 | 0 | 2011-02-08 | Filing | 
  | Officer, Director | $76.25 | 5,000 | $381,250.00 | 0 | 2011-02-03 | Filing | 
  | Officer, Director | $76.05 | 9,860 | $749,853.00 | 0 | 2011-02-02 | Filing | 
  | Officer | $76.40 | 3,500 | $267,400.00 | 0 | 2011-01-18 | Filing | 
  | Officer, Director | $75.93 | 7,640 | $580,105.20 | 0 | 2011-01-05 | Filing |