Duration of protogenesic interval (months)	Duration of interval between 1st and 2nd birth (months)	Total
Total	Total	100
Total	From 0 to 7 months	1,09
Total	From 8 to 11 months	1,33
Total	From 12 to 23 months	19,63
Total	From 24 to 35 months	18,13
Total	From 36 to 47 months	17,85
Total	From 48 to 59 months	14,51
Total	60 and over	27,46
Negative	Total	100
Negative	From 0 to 7 months	2,04
Negative	From 8 to 11 months	0,96
Negative	From 12 to 23 months	14,73
Negative	From 24 to 35 months	16,97
Negative	From 36 to 47 months	12,45
Negative	From 48 to 59 months	14,41
Negative	60 and over	38,45
From 0 to 7 months	Total	100
From 0 to 7 months	From 0 to 7 months	0,37
From 0 to 7 months	From 8 to 11 months	1,78
From 0 to 7 months	From 12 to 23 months	26,71
From 0 to 7 months	From 24 to 35 months	16,53
From 0 to 7 months	From 36 to 47 months	11,43
From 0 to 7 months	From 48 to 59 months	12,77
From 0 to 7 months	60 and over	30,41
From 8 to 11 months	Total	100
From 8 to 11 months	From 0 to 7 months	0,91
From 8 to 11 months	From 8 to 11 months	1,15
From 8 to 11 months	From 12 to 23 months	21,95
From 8 to 11 months	From 24 to 35 months	16,59
From 8 to 11 months	From 36 to 47 months	21,11
From 8 to 11 months	From 48 to 59 months	14,64
From 8 to 11 months	60 and over	23,64
From 12 to 23 months	Total	100
From 12 to 23 months	From 0 to 7 months	0,67
From 12 to 23 months	From 8 to 11 months	1,66
From 12 to 23 months	From 12 to 23 months	18,57
From 12 to 23 months	From 24 to 35 months	18,2
From 12 to 23 months	From 36 to 47 months	19,51
From 12 to 23 months	From 48 to 59 months	14,85
From 12 to 23 months	60 and over	26,54
From 24 to 35 months	Total	100
From 24 to 35 months	From 0 to 7 months	1,53
From 24 to 35 months	From 8 to 11 months	..
From 24 to 35 months	From 12 to 23 months	16,48
From 24 to 35 months	From 24 to 35 months	21,58
From 24 to 35 months	From 36 to 47 months	15,57
From 24 to 35 months	From 48 to 59 months	14,87
From 24 to 35 months	60 and over	29,97
From 36 to 47 months	Total	100
From 36 to 47 months	From 0 to 7 months	0,44
From 36 to 47 months	From 8 to 11 months	0,54
From 36 to 47 months	From 12 to 23 months	12,3
From 36 to 47 months	From 24 to 35 months	18,49
From 36 to 47 months	From 36 to 47 months	26,4
From 36 to 47 months	From 48 to 59 months	16,58
From 36 to 47 months	60 and over	25,25
From 48 to 59 months	Total	100
From 48 to 59 months	From 0 to 7 months	2,16
From 48 to 59 months	From 8 to 11 months	4,1
From 48 to 59 months	From 12 to 23 months	16,71
From 48 to 59 months	From 24 to 35 months	24,21
From 48 to 59 months	From 36 to 47 months	9,99
From 48 to 59 months	From 48 to 59 months	14,32
From 48 to 59 months	60 and over	28,5
60 and over	Total	100
60 and over	From 0 to 7 months	4,85
60 and over	From 8 to 11 months	1,79
60 and over	From 12 to 23 months	16,19
60 and over	From 24 to 35 months	19,04
60 and over	From 36 to 47 months	17,91
60 and over	From 48 to 59 months	14,29
60 and over	60 and over	25,93