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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 | 19,216 | 9,029 | 10,187 | 3,645 | 362 | 3,283 | 81.03 | 95.99 | 67.77 |  |  |  |  |  |  |  
              | 2009 | 19,383 | 8,901 | 10,482 | 3,763 | 371 | 3,392 | 80.59 | 95.83 | 67.64 | -0.45 | -0.16 | -0.13 |  |  |  |  
              | 2010 | 19,249 | 8,488 | 10,761 | 3,916 | 352 | 3,564 | 79.66 | 95.85 | 66.88 | -0.93 | 0.02 | -0.76 |  |  |  |  
              | 2011 | 19,474 | 8,442 | 11,032 | 4,188 | 359 | 3,829 | 78.49 | 95.75 | 65.29 | -1.16 | -0.11 | -1.59 |  |  |  |  
              | 2012 | 19,904 | 8,647 | 11,257 | 4,306 | 375 | 3,931 | 78.37 | 95.66 | 65.08 | -0.13 | -0.08 | -0.21 | -2.67 | 0.33 | -2.69 |  |