Table:
mean
median

years

demographics

age
64.1
64.0

percent

female
52.0
..

male
48.0
..

married
72.3
..

employment and income

has employment earnings
34.7
..

has self-employment earnings
9.1
..

has investment income
44.6
..

has capital gains
12.6
..

has old age security income
42.8
..

has private pension income
38.9
..

has taxable income
98.1
..

2012 constant dollars

conditional earnings and income

employment earnings
42,800
27,100

self-employment earnings
28,100
10,100

investment income
3,400
750

capital gains
9,200
750

old age security income
5,700
6,500

private pension income
21,700
17,250

taxable income
39,550
28,300

percent

income-tax rates

predicted marginal income tax rate
22.1
23.6

predicted average income tax rate
11.4
13.2

Statement: using ctacs, the mean value of the predicted marginal income tax rate is 22.1%.
Question: using ctacs, what is the mean value of the predicted marginal income tax rate?
Answer: [22.1]