0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
25
30
35
40
75歳以上
65~74歳
高齢化率
'55
'50
'45
'40
'35
'30
'25
'20
人口
高齢化率
千人
%
17,425
28.6%
29.6%
30.8%
32.3%
34.8%
36.3%
18,602
36,027
36,027
36,529
36,529
36,962
36,962
37,732
37,732
39,285
39,285
39,451
39,451
14,982
21,547
14,349
22,613
15,348
22,384
17,010
22,275
16,680
22,772
37.1%
38,878
38,878
14,547
24,332
37.6%
37,779
37,779
12,989
24,791