| 1 | MAIRS AND POWER, INC. | 28-07342 | 
        
          | 2 | MCADAMS WRIGHT RAGEN, INC. | 28-13472 | 
        
          | 4 | GENEVA INVESTMENT MANAGEMENT LLC | 28-10799 | 
        
          | 3 | RIVERBRIDGE PARTNERS LLC | 28-05655 | 
        
          | 5 | TWEEDY BROWNE CO LLC | 28-01222 | 
        
          | 6 | ALLIANCEBERNSTEIN L.P. | 28-10562 | 
        
          | 7 | NELSON CAPITAL MANAGEMENT, LLC | 28-10450 | 
        
          | 8 | MORGAN STANLEY SMITH BARNEY LLC | 28-13935 | 
        
          | 10 | DAVIDSON DA & CO | 28-07602 | 
        
          | 9 | FOLGER NOLAN FLEMING DOUGLAS CAPITAL | 28-03143 | 
        
          | 11 | HAMLIN CAPITAL MANAGEMENT, LLC | 28-10663 | 
        
          | 12 | OSTERWEIS CAPITAL MANAGEMENT INC | 28-04483 | 
        
          | 13 | MURPHY POHLAD ASSET MANAGEMENT LLC | 28-15160 | 
        
          | 14 | CORTINA ASSET MANAGEMENT, LLC | 28-11351 | 
        
          | 16 | GOLDMAN SACHS ASSET MANAGEMENT | 28-10981 | 
        
          | 15 | LATEEF INVESTMENT MANAGEMENT, LP | 28-05358 | 
        
          | 17 | MORGAN STANLEY PRIVATE WEALTH MANAGEMENT LTD | 28-14364 | 
        
          | 18 | RBC CAPITAL MARKETS, LLC | 28-04069 | 
        
          | 19 | MERISTEM, LLP | 28-14152 | 
        
          | 20 | FIRST WASHINGTON | 28-12988 | 
        
          | 22 | JP MORGAN SECURITIES PLC | 28-11925 | 
        
          | 21 | CAMBIAR INVESTORS LLC | 28-01398 | 
        
          | 23 | PARAMETIC PORTFOLIO ASSOCIATES LLC | 28-04558 | 
        
          | 24 | TRILLIUM ASSET MANAGEMENT, LLC | 28-03125 | 
        
          | 25 | ZEVIN ASSET MANAGEMENT LLC | 28-12552 | 
        
          | 26 | APERIO GROUP, LLC | 28-11964 | 
        
          | 28 | US BANCORP | 28-00551 | 
        
          | 27 | GAMCO INVESTORS, INC. ET AL | 28-01887 |