Note the statement under the figures - ...life choices other than work are realistic and even rational ones to take.
Here is a rough comparison for New Zealand. The median weekly income from working is taken from NZ Statistics Income Survey with 20 percent tax applied. The others are the result of some googling and are fairly arbitrary. The benefit incomes include other top-ups like accommodation supplement, family tax credit, etc.
Occupation/ Net income p.w. from median female wages
- Single person out of work $250 (all benefits)
- Median weekly income 15-24 year-olds $384
- Waitress/Bar staff/Cleaner $400
- Receptionist $415
- Hairdresser $418
- Single parent with one child out of work $430 (all benefits)
- Shop Assistant $448
- Typist $512
- Librarian $544
- Nurse $569
Seriously, if you had no or few school qualifications or little work ethic/inclination, why not choose motherhood?