Disability, Independence and Dependency Situations Survey 
Relative figures
Percentage of persons with visual impairments, who use Braille, by age and sex 
Unidades: percentage

,Both sexes,Males,Females,
Total,1,16,1,56,0,92,
6 to 64 years old,2,64,3,18,2,14,
65 to 79 years old,0,95,0,9,0,98,
80 years old and over,0,03,0,0,05,
Notas:
The data corresponding to cells with fewer than 5 thousand persons must  be viewed with caution, because it may be affected by  large sampling errors. 
Fuente: National Statistics Institute