| Value |
Category |
| 00 |
None |
| 11 |
Primary, 1 years |
| 12 |
Primary, 2 years |
| 13 |
Primary, 3 years |
| 14 |
Primary, 4 years |
| 15 |
Primary, 5 years |
| 16 |
Primary, 6 years |
| 19 |
Primary, grade unknown |
| 21 |
Middle, 1 years |
| 22 |
Middle, 2 years |
| 23 |
Middle, 3 years |
| 24 |
Middle, 4 years |
| 25 |
Middle, 5 years |
| 29 |
Middle, grade unknown |
| 31 |
Humanities high school, 1 years |
| 32 |
Humanities high school, 2 years |
| 33 |
Humanities high school, 3 years |
| 34 |
Humanities high school, 4 years |
| 35 |
Humanities high school, 5 years |
| 36 |
Humanities high school, 6 years |
| 39 |
Humanities high school, grade unknown |
| 42 |
Vocational high school, 2 years |
| 43 |
Vocational high school, 3 years |
| 44 |
Vocational high school, 4 years |
| 45 |
Vocational high school, 5 years |
| 46 |
Vocational high school, 6 years |
| 49 |
Vocational high school, grade unknown |
| 52 |
Teacher training, 2 years |
| 53 |
Teacher training, 3 years |
| 54 |
Teacher training, 4 years |
| 55 |
Teacher training, 5 years |
| 56 |
Teacher training, 6 years |
| 57 |
Teacher training, 7 years |
| 58 |
Teacher training, 8 years |
| 59 |
Teacher training, grade unknown |
| 61 |
University, 1 years |
| 62 |
University, 2 years |
| 63 |
University, 3 years |
| 64 |
University, 4 years |
| 65 |
University, 5 years |
| 66 |
University, 6 years |
| 69 |
University, grade unknown |
| 98 |
Unknown |
| 99 |
NIU (not in universe) |
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.