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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 | 10,983 | 6,029 | 4,954 | 1,493 | 196 | 1,297 | 86.41 | 96.75 | 73.82 | ― | ― | ― | ― | ― | ― |  
              | 2009 | 11,328 | 6,195 | 5,133 | 1,512 | 189 | 1,323 | 86.65 | 96.95 | 74.23 | 0.25 | 0.20 | 0.41 | ― | ― | ― |  
              | 2010 | 11,488 | 6,160 | 5,328 | 1,584 | 192 | 1,392 | 86.21 | 96.88 | 73.87 | -0.44 | -0.07 | -0.35 | ― | ― | ― |  
              | 2011 | 11,960 | 6,425 | 5,535 | 1,685 | 193 | 1,492 | 88.92 | 97.08 | 74.91 | 2.71 | 0.20 | 1.03 | ― | ― | ― |  
              | 2012 | 12,590 | 6,861 | 5,729 | 1,748 | 205 | 1,543 | 86.12 | 97.01 | 73.07 | -2.80 | -0.07 | -1.84 | -0.29 | 0.26 | -0.75 |  |