aus_fertility is an annual vital object covering the years 1921-2002 with three values:
| Fertility: | Fertility rate per woman |
| Exposure: | Population of women at 30 June each year |
| Births: | Number of births |
Source
Australian Human Mortality Database. https://aushd.org
Details
The data is disaggregated using one key:
| Age: | Age of mother at time of birth |
The extreme age groups (15 and 49) also include a few younger and older mothers respectively.
Examples
library(ggplot2)
aus_fertility
#> # A vital: 3,010 x 5 [1Y]
#> # Key: Age [35 x 1]
#> Year Age Fertility Exposure Births
#> <int> <int> <dbl> <dbl> <dbl>
#> 1 1921 15 0.00175 49228 86.1
#> 2 1921 16 0.00685 47779 327.
#> 3 1921 17 0.0183 45894 839.
#> 4 1921 18 0.0399 45683 1824.
#> 5 1921 19 0.0676 43364 2931.
#> 6 1921 20 0.0914 47016 4297.
#> 7 1921 21 0.120 48023 5787.
#> 8 1921 22 0.142 46368 6566.
#> 9 1921 23 0.16 45123 7220.
#> 10 1921 24 0.167 46709 7782.
#> # ℹ 3,000 more rows
aus_fertility |>
autoplot(Fertility) +
ylab("Fertility rate")
