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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 | 4,203 | 2,112 | 2,091 | 478 | 60 | 418 | 88.63 | 97.16 | 80.01 | ― | ― | ― | ― | ― | ― |  
              | 2009 | 4,261 | 2,103 | 2,158 | 498 | 58 | 440 | 88.31 | 97.24 | 79.61 | -0.31 | 0.08 | -0.40 | ― | ― | ― |  
              | 2010 | 4,266 | 2,053 | 2,213 | 536 | 58 | 478 | 87.44 | 97.17 | 78.40 | -0.88 | -0.07 | -1.21 | ― | ― | ― |  
              | 2011 | 4,373 | 2,115 | 2,258 | 559 | 56 | 503 | 85.93 | 96.44 | 75.69 | -1.51 | -0.73 | -2.71 | ― | ― | ― |  
              | 2012 | 4,495 | 2,204 | 2,291 | 601 | 65 | 536 | 86.63 | 97.05 | 76.60 | 0.70 | 0.61 | 0.92 | -2.00 | -0.11 | -3.41 |  |