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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 | 3,742 | 1,908 | 1,834 | 434 | 61 | 373 | 88.40 | 96.80 | 79.66 | ― | ― | ― | ― | ― | ― |  
              | 2009 | 3,767 | 1,910 | 1,857 | 445 | 61 | 384 | 88.19 | 96.81 | 79.32 | -0.22 | 0.00 | -0.34 | ― | ― | ― |  
              | 2010 | 3,768 | 1,853 | 1,915 | 484 | 66 | 418 | 87.15 | 96.44 | 78.17 | -1.03 | -0.37 | -1.15 | ― | ― | ― |  
              | 2011 | 3,861 | 1,925 | 1,936 | 519 | 62 | 457 | 86.56 | 96.78 | 76.39 | -0.60 | 0.34 | -1.78 | ― | ― | ― |  
              | 2012 | 4,002 | 2,006 | 1,996 | 549 | 67 | 482 | 86.28 | 96.66 | 75.85 | -0.28 | -0.12 | -0.54 | -2.12 | 0.14 | -3.81 |  |