Table:
after-tax low income rate
average after-tax low income gap ratio

including witb
excluding witb
difference
including witb
excluding witb
difference

percent

total population
17.7
17.8
0.1
39.0
39.5
0.5

witb population
56.3
58.3
2.0
28.5
30.9
2.4

female lone-parent family
42.2
42.9
0.7
39.9
40.2
0.3

witb female lone-parent family
53.7
57.2
3.5
24.8
26.6
1.8

Statement: the after-tax low-income rate was 17.7% for the total population.
Question: what is the after-tax low-income rate for the total population?
Answer: [17.7]