top piza chains and number of outlets in 2008

We'll just give you the Top 20 from that list (and the number of units/locations):

    Pizza Hut: 14,759
    Domino's Pizza: 8,641
    Papa John's Pizza: 3,238
    Little Caesars: 2,000
    Noble Roman's Pizza: 1,400
    Casey's Carry-Out Pizza: 1355
    Papa Murphy's Take 'N' Bake Pizza: 1,073
    Sbarro's Italian Eatery: 1,040
    Godfather's Pizza: 656
    Cici's Pizza: 631
    Hungry Howie's Pizza: 575
    Pizza Pro: 552
    Chuck E. Cheese's: 537
    Round Table Pizza: 505
    Papa Gino's: 365
    Pizza Inn: 335
    Fox's Pizza Den: 315
    California Pizza Kitchen: 239
    Simple Simon's Pizza: 227
    Uno Chicago Grill: 225