| 
                               1994 
                               
                             | 
                            
                               13.88 
                               
                             | 
                            
                               1,415 
                               
                             | 
                           
                          
                            | 
                               1995 
                               
                             | 
                            
                               28.64 
                             | 
                            
                               1,186 
                             | 
                           
                          
                            | 
                               1996 
                               
                             | 
                            
                               36.70 
                             | 
                            
                               1,566 
                             | 
                           
                          
                            | 
                               1997 
                               
                             | 
                            
                               54.70 
                             | 
                            
                               1,559 
                             | 
                           
                          
                            | 
                               1998 
                               
                             | 
                            
                               27.85 
                             | 
                            
                               1,251 
                             | 
                           
                          
                            | 
                               1999 
                               
                             | 
                            
                               44.35 
                             | 
                            
                               1,648 
                             | 
                           
                          
                            | 
                               2000 
                               
                             | 
                            
                               12.88 
                             | 
                            
                               2,015 
                             | 
                           
                          
                            | 
                               2001 
                               
                             | 
                            
                               10.23 
                             | 
                            
                               1,730 
                             | 
                           
                          
                            | 
                               2002 
                               
                             | 
                            
                               16.73 
                             | 
                            
                               1,776 
                             | 
                           
                          
                            | 
                               2003 
                               
                             | 
                            
                               33.70 
                             | 
                            
                               1,414 
                             | 
                           
                          
                            | 
                               2004 
                             | 
                            
                               57.00 
                             | 
                            
                               1,692 
                             | 
                           
                          
                            | 
                                                               * Precio nominal
                                al cierre 
        ** Volumen diario promedio 
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