|   | 
            2001 | 
            2002 | 
            2003 | 
            2004 | 
         
        
            | Percentage of firms using PC | 
            34,2% | 
            35,6% | 
            36,0% | 
            42% | 
         
        
            | Percentage of firms using internet | 
            15,4% | 
            19,6% | 
            19,8% | 
            28,1% | 
         
        
            | Percentage of firms using e-mail | 
            12,4% | 
            16,8% | 
            16,8% | 
            25% | 
         
        
            | Percentage of firms using corporate mobile phone | 
            8,0% | 
            8,0% | 
            12,0% | 
            20% | 
         
        
            |   | 
         
        
            | Percentage of population using PC | 
            20,8% | 
            25,8% | 
            27,1% | 
            25,9% | 
         
        
            | Percentage of population using internet | 
            10,6% | 
            17,2% | 
            19,9% | 
            19,7% | 
         
        
            | Percentage of population using e-mail | 
            7,0% | 
            11,1% | 
            12,4% | 
            12,5% | 
         
        
            | Percentage of population owning mobile phone | 
            49,5% | 
            58,5% | 
            64,7% | 
            69,4% | 
         
    
    |