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              | 年度 | 第1号保険者数 | 要介護(支援)認定者数 | 自立度(%) | 対前年変動率(%) | 対2008年変動率(%) |  
              |  | 合計 | 65~75 | 75~ | 合計 | 65~75 | 75~ | 合計 | 65~75 | 75~ | 合計 | 65~75 | 75~ | 合計 | 65~75 | 75~ |  
              | 2008 | 29,929 | 18,435 | 11,494 | 3,508 | 585 | 2,923 | 88.28 | 96.83 | 74.57 | ― | ― | ― | ― | ― | ― |  
              | 2009 | 30,948 | 18,658 | 12,290 | 3,711 | 589 | 3,122 | 88.01 | 96.84 | 74.60 | -0.27 | 0.02 | 0.03 | ― | ― | ― |  
              | 2010 | 31,592 | 18,435 | 13,157 | 3,984 | 616 | 3,368 | 87.39 | 96.66 | 74.40 | -0.62 | -0.18 | -0.20 | ― | ― | ― |  
              | 2011 | 32,645 | 18,655 | 13,990 | 4,259 | 659 | 3,600 | 86.95 | 96.47 | 74.27 | -0.44 | -0.19 | -0.13 | ― | ― | ― |  
              | 2012 | 34,297 | 19,367 | 14,930 | 4,634 | 702 | 3,932 | 86.49 | 96.38 | 73.66 | -0.46 | -0.09 | -0.60 | -1.79 | 0.45 | -0.91 |  |