Table:
canada
united states

1997
2015
1997
2015

percent

aged 25 to 54

high school or less
39.7
23.5
45.1
33.4

college, trade or other postsecondary
42.0
41.4
28.5
28.8

university degree
18.3
35.1
26.4
37.8

aged 25 to 44

high school or less
36.7
20.5
43.8
31.5

college, trade or other postsecondary
43.8
40.5
29.3
28.9

university degree
19.5
39.0
26.9
39.7

aged 45 to 54

high school or less
47.0
29.2
48.0
37.2

college, trade or other postsecondary
37.6
43.0
26.7
28.6

university degree
15.5
27.8
25.3
34.2

Statement: the proportion of canadian women aged 25 to 44 with a university degree increased nearly twofold from 1997 to 2015.
Question: how many times of the proportion of canadian women aged 25 to 44 with a university degree have increased from 1997 to 2015?
Answer: [2]