| Value |
Category |
| 0 |
NONE |
| 1 |
ONE |
| 2 |
TWO |
| 3 |
THREE |
| 4 |
FOUR |
| 5 |
FIVE |
| 6 |
SIX |
| 7 |
SEVEN |
| 8 |
EIGHT |
| 9 |
NINE |
| 10 |
TEN OR MORE BOOKS |
| 99 |
NO RESPONSE |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.