Level of studies	Duration of open interval between births (months)	Total
Total	Total	5.212.113
Total	From 0 to 7 months	1.211.340
Total	From 8 to 11 months	93.514
Total	From 12 to 23 months	345.294
Total	From 24 to 35 months	313.324
Total	From 36 to 47 months	273.922
Total	From 48 to 59 months	212.189
Total	60 and over	2.762.530
Total	Average	92,18
Illiterate	Total	13.498
Illiterate	From 0 to 7 months	1.819
Illiterate	From 8 to 11 months	538
Illiterate	From 12 to 23 months	1.069
Illiterate	From 24 to 35 months	588
Illiterate	From 36 to 47 months	151
Illiterate	From 48 to 59 months	..
Illiterate	60 and over	9.334
Illiterate	Average	117,34
Without studies	Total	150.991
Without studies	From 0 to 7 months	34.466
Without studies	From 8 to 11 months	745
Without studies	From 12 to 23 months	3.279
Without studies	From 24 to 35 months	1.260
Without studies	From 36 to 47 months	3.807
Without studies	From 48 to 59 months	2.422
Without studies	60 and over	105.012
Without studies	Average	129,94
Primary education and second grade, GBE or first year of GCSE	Total	2.951.686
Primary education and second grade, GBE or first year of GCSE	From 0 to 7 months	706.048
Primary education and second grade, GBE or first year of GCSE	From 8 to 11 months	33.590
Primary education and second grade, GBE or first year of GCSE	From 12 to 23 months	154.682
Primary education and second grade, GBE or first year of GCSE	From 24 to 35 months	148.549
Primary education and second grade, GBE or first year of GCSE	From 36 to 47 months	144.085
Primary education and second grade, GBE or first year of GCSE	From 48 to 59 months	73.797
Primary education and second grade, GBE or first year of GCSE	60 and over	1.690.935
Primary education and second grade, GBE or first year of GCSE	Average	100,36
Secondary Education and Post-secondary non-higher	Total	647.866
Secondary Education and Post-secondary non-higher	From 0 to 7 months	106.528
Secondary Education and Post-secondary non-higher	From 8 to 11 months	12.783
Secondary Education and Post-secondary non-higher	From 12 to 23 months	59.629
Secondary Education and Post-secondary non-higher	From 24 to 35 months	52.639
Secondary Education and Post-secondary non-higher	From 36 to 47 months	35.128
Secondary Education and Post-secondary non-higher	From 48 to 59 months	34.658
Secondary Education and Post-secondary non-higher	60 and over	346.501
Secondary Education and Post-secondary non-higher	Average	91,57
1º, 2º and intermediate technical-professional studies	Total	756.736
1º, 2º and intermediate technical-professional studies	From 0 to 7 months	206.586
1º, 2º and intermediate technical-professional studies	From 8 to 11 months	20.816
1º, 2º and intermediate technical-professional studies	From 12 to 23 months	58.373
1º, 2º and intermediate technical-professional studies	From 24 to 35 months	55.861
1º, 2º and intermediate technical-professional studies	From 36 to 47 months	53.938
1º, 2º and intermediate technical-professional studies	From 48 to 59 months	60.961
1º, 2º and intermediate technical-professional studies	60 and over	300.201
1º, 2º and intermediate technical-professional studies	Average	69,17
Higher level technical-professional studies	Total	9.577
Higher level technical-professional studies	From 0 to 7 months	1.339
Higher level technical-professional studies	From 8 to 11 months	..
Higher level technical-professional studies	From 12 to 23 months	2.204
Higher level technical-professional studies	From 24 to 35 months	..
Higher level technical-professional studies	From 36 to 47 months	3.611
Higher level technical-professional studies	From 48 to 59 months	..
Higher level technical-professional studies	60 and over	2.423
Higher level technical-professional studies	Average	49,16
First year of tertiary education	Total	310.949
First year of tertiary education	From 0 to 7 months	74.860
First year of tertiary education	From 8 to 11 months	8.680
First year of tertiary education	From 12 to 23 months	20.989
First year of tertiary education	From 24 to 35 months	25.493
First year of tertiary education	From 36 to 47 months	10.923
First year of tertiary education	From 48 to 59 months	14.423
First year of tertiary education	60 and over	155.581
First year of tertiary education	Average	80,92
Tertiary education, university graduates and doctors	Total	370.810
Tertiary education, university graduates and doctors	From 0 to 7 months	79.694
Tertiary education, university graduates and doctors	From 8 to 11 months	16.362
Tertiary education, university graduates and doctors	From 12 to 23 months	45.070
Tertiary education, university graduates and doctors	From 24 to 35 months	28.935
Tertiary education, university graduates and doctors	From 36 to 47 months	22.279
Tertiary education, university graduates and doctors	From 48 to 59 months	25.928
Tertiary education, university graduates and doctors	60 and over	152.542
Tertiary education, university graduates and doctors	Average	69,39