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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 | 36,000 | 23,141 | 12,859 | 3,829 | 714 | 3,115 | 89.36 | 96.91 | 75.78 | ― | ― | ― | ― | ― | ― |  
              | 2009 | 37,651 | 23,779 | 13,872 | 4,123 | 738 | 3,385 | 89.05 | 96.90 | 75.60 | -0.31 | -0.02 | -0.18 | ― | ― | ― |  
              | 2010 | 38,678 | 23,641 | 15,037 | 4,316 | 762 | 3,554 | 88.84 | 96.78 | 76.36 | -0.21 | -0.12 | 0.77 | ― | ― | ― |  
              | 2011 | 40,147 | 23,993 | 16,154 | 4,742 | 788 | 3,954 | 88.19 | 96.72 | 75.52 | -0.65 | -0.06 | -0.84 | ― | ― | ― |  
              | 2012 | 42,261 | 24,896 | 17,365 | 5,281 | 906 | 4,375 | 87.50 | 96.36 | 74.81 | -0.68 | -0.35 | -0.72 | -1.86 | 0.55 | -0.97 |  |