Births

14   Number of children distributed, by age and cohort1. Per cent
  Cohort of births Number of children Average number of children
  0 1 2 3 4
Age of mother 20 years 1935 82.6 14.9 2.4 0.1 0.0 0.20
  1940 79.6 16.9 3.2 0.3 0.0 0.24
  1945 78.4 17.2 4.1 0.3 0.0 0.26
  1950 76.7 19.0 4.0 0.3 0.0 0.28
  1955 77.4 19.7 2.8 0.1 0.0 0.26
  1960 84.1 14.3 1.6 0.1 0.0 0.18
  1965 88.2 10.6 1.1 0.1 0.0 0.13
  1970 89.3 9.7 1.0 0.1 0.0 0.12
  1975 91.5 7.7 0.8 0.0 0.0 0.09
  1980 92.6 6.8 0.6 0.0 0.0 0.08
  1982 93.5 6.2 0.3 0.0 0.0 0.07
               
Age of mother 25 years 1935 36.9 31.2 24.2 6.4 1.3 1.04
  1940 34.8 28.5 26.4 8.1 2.2 1.14
  1945 33.3 29.4 27.3 8.2 1.8 1.16
  1950 34.4 32.0 27.4 5.4 0.7 1.06
  1955 43.2 30.6 22.7 3.2 0.4 0.87
  1960 52.3 27.6 17.2 2.5 0.3 0.71
  1965 56.2 27.0 14.2 2.4 0.3 0.64
  1970 60.8 24.7 12.3 1.9 0.3 0.56
  1975 67.6 20.8 9.7 1.6 0.2 0.46
  1977 69.5 19.5 9.3 1.3 0.2 0.43
               
Age of mother 30 years 1935 16.9 18.5 35.5 20.2 8.9 1.86
  1940 15.8 16.8 36.0 22.0 9.3 1.92
  1945 15.2 18.4 41.3 19.1 5.9 1.82
  1950 16.9 21.1 44.8 14.3 2.9 1.65
  1955 22.4 23.9 39.4 12.1 2.3 1.48
  1960 26.0 25.1 35.0 11.7 2.3 1.39
  1965 28.6 25.8 32.8 10.7 2.1 1.32
  1970 32.0 26.4 30.4 9.3 1.8 1.23
  1972 35.6 25.9 28.5 8.4 1.7 1.15
               
Age of mother 35 years 1935 11.2 11.9 32.0 26.8 18.1 2.29
  1940 11.0 11.3 34.2 28.0 15.4 2.26
  1945 10.6 12.8 42.2 25.2 9.1 2.09
  1950 11.6 15.0 45.8 21.5 6.0 1.95
  1955 14.5 16.6 42.6 21.0 5.4 1.86
  1960 15.8 16.7 39.5 22.0 6.0 1.86
  1965 16.4 17.3 39.8 20.9 5.6 1.82
  1967 17.3 18.0 39.3 20.2 5.2 1.78
               
Age of mother 40 years 1935 9.8 10.5 30.4 27.4 21.8 2.41
  1940 9.7 10.1 33.9 29.0 17.3 2.34
  1945 9.2 11.9 41.6 26.3 11.0 2.18
  1950 9.7 13.5 45.4 23.3 8.0 2.06
  1955 11.7 14.6 42.1 23.9 7.7 2.01
  1960 12.4 14.1 39.3 25.4 8.7 2.04
  1962 12.4 14.2 39.3 25.6 8.5 2.04
               
Age of mother 45 years 1935 9.6 10.4 30.4 27.4 22.2 2.42
  1940 9.5 10.1 33.7 29.1 17.6 2.35
  1945 9.0 11.8 41.5 26.4 11.3 2.19
  1950 9.4 13.3 45.4 23.5 8.4 2.08
  1955 11.2 14.3 42.1 24.2 8.1 2.04
  1957 11.7 14.2 41.0 24.5 8.5 2.04
1  For the cohorts 1935 to 1950 women resident in Norway per 31 December 1998. For the cohort 1955 women resident in Norway per 31 December 2001. For the cohorts 1956 to 1982 women resident in Norway per 31 December 2002.

Explanation of symbols