Table:
sex, age group and type of smoker
1991
2001
2012

%
95% confidence interval
%
95% confidence interval
%
95% confidence interval

from
to
from
to
from
to

sex

male

daily smoker
64
62
66
62
59
65
51
47
55

occasional smoker
8
7
9
7
5
8
10
8
11

non-smoker
29
27
31
31
29
34
39
35
44

female

daily smoker
64
62
66
61
57
64
53
49
57

occasional smoker
7
6
8
6
4
7
9
7
12

non-smoker
28
26
30
33
30
37
38
34
41

age group

15 to 24

daily smoker
65
63
67
66
62
69
55
51
60

occasional smoker
8
7
9
7
6
9
12
9
15

non-smoker
27
26
29
27
24
30
33
28
38

25 to 34

daily smoker
69
67
71
66
59
71
62
58
66

occasional smoker
8
6
9
5
4
7
12
9
16

non-smoker
23
21
25
29
23
36
26
22
30

35 to 44

daily smoker
65
63
67
66
61
70
56
50
62

occasional smoker
9
8
10
6
4
8
7
5
10

non-smoker
26
24
28
28
24
33
37
30
43

45 to 54

daily smoker
61
59
63
55
47
63
60
52
68

occasional smoker
4
4
5
7
4
12
10
7
15

non-smoker
34
32
36
38
31
45
30
22
38

55 to 64

daily smoker
51
49
53
43
36
51
34
24
46

occasional smoker
7
6
8
4
2
7
5
3
10

non-smoker
42
40
44
53
45
61
61
49
72

65 or older

daily smoker
42
40
44
35
29
43
12
7
19

occasional smoker
6
5
7
6
3
10
f
..
..

non-smoker
51
49
53
59
51
66
85
77
90

Statement: the prevalence of smoking is lowest at the extremes of the age range.
Question: which age group has the lowest prevalence of smoking?
Answer: 65 or older