| Value |
Category |
| 00 |
0 birth |
| 10 |
One male born first half of 1989 |
| 11 |
Two male borns first half of 1989 |
| 12 |
One male born and one female born first half of 1989 |
| 13 |
One male born first half of 1989 and one male born second half of 1989 |
| 14 |
One male born first half of 1989 and one female born second half of 1989 |
| 15 |
One male born first half of 1989 and one male born first half of 1990 |
| 16 |
One male born first half of 1989 and one female born first half of 1990 |
| 20 |
Female born first half of 1989 |
| 21 |
One female born and onemale born first half of 1989 |
| 22 |
Two female borns first half of 1989 |
| 23 |
One female born first half of 1989 and one male born second half of 1989 |
| 24 |
One female born first half of 1989 and one female born second half of 1989 |
| 25 |
One female born first half of 1989 and one male born first half of 1990 |
| 26 |
One female born first half of 1989 and one female born first half of 1990 |
| 30 |
Male born second half of 1989 |
| 31 |
One male born second half of 1989 and one male born first half of 1989 |
| 32 |
One male born second half of 1989 and one female born first half of 1989 |
| 33 |
Two male borns second half of 1989 |
| 34 |
One male born and one female born second half of 1989 |
| 35 |
One male born second half of 1989 and one male born first half of 1990 |
| 36 |
One male born second half of 1989 and one female born first half of 1990 |
| 40 |
Female born second half of 1989 |
| 41 |
One female born second half of 1989 and one male born first half of 1989 |
| 42 |
One female born second half of 1989 and one female born first half of 1989 |
| 43 |
One female born and onemale born second half of 1989 |
| 44 |
Two female borns second half of 1989 |
| 45 |
One female born second half of 1989 and one male born first half of 1990 |
| 46 |
One female born second half of 1989 and one female born first half of 1990 |
| 50 |
Male born first half of 1990 |
| 51 |
One male born first half of 1990 and one male born first half of 1989 |
| 52 |
One male born first half of 1990 and one female born first half of 1989 |
| 54 |
One male born first half of 1990 and one female born second half of 1989 |
| 55 |
Two male borns first half of 1990 |
| 56 |
One male born and one female born first half of 1990 |
| 60 |
Female born first half of 1990 |
| 61 |
One female born first half of 1990 and one male born first half of 1989 |
| 62 |
One female born first half of 1990 and one female born first half of 1989 |
| 63 |
One female born first half of 1990 and one male born second half of 1989 |
| 64 |
One female born first half of 1990 and one female born second half of 1989 |
| 65 |
One female born and one male born first half of 1990 |
| 66 |
Two female borns first half of 1990 |
| 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.