Here is a slightly confusing bar chart.

At first glance it might seem that, as far as 1923 was concerned, 45% of 25-year-old women were still childless, 20% of 35-year-old women were childless and so on. But it doesn’t mean that.

Q1. What do the figures for 1923 actually mean?

Q2. What percentage of women born in 1943 appear never to have had children at all?

Q3. Discuss the general trend of the chart.