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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 | 15,216 | 7,358 | 7,858 | 2,274 | 299 | 1,975 | 85.06 | 95.94 | 74.87 | ― | ― | ― | ― | ― | ― |  
              | 2009 | 15,477 | 7,370 | 8,107 | 2,367 | 260 | 2,107 | 84.71 | 96.47 | 74.01 | -0.35 | 0.54 | -0.86 | ― | ― | ― |  
              | 2010 | 15,481 | 7,256 | 8,225 | 2,522 | 264 | 2,258 | 83.71 | 96.36 | 72.55 | -1.00 | -0.11 | -1.46 | ― | ― | ― |  
              | 2011 | 15,798 | 7,418 | 8,380 | 2,668 | 273 | 2,395 | 83.11 | 96.32 | 71.42 | -0.60 | -0.04 | -1.13 | ― | ― | ― |  
              | 2012 | 16,337 | 7,875 | 8,462 | 2,860 | 287 | 2,573 | 82.49 | 96.36 | 69.59 | -0.62 | 0.04 | -1.83 | -2.56 | -0.42 | -5.27 |  |