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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 | 31,649 | 19,514 | 12,135 | 4,295 | 704 | 3,591 | 86.43 | 96.39 | 70.41 | ― | ― | ― | ― | ― | ― |  
              | 2009 | 33,097 | 20,194 | 12,903 | 4,589 | 723 | 3,866 | 86.13 | 96.42 | 70.04 | -0.29 | 0.03 | -0.37 | ― | ― | ― |  
              | 2010 | 34,021 | 20,188 | 13,833 | 4,909 | 757 | 4,152 | 85.57 | 96.25 | 69.98 | -0.56 | -0.17 | -0.05 | ― | ― | ― |  
              | 2011 | 35,579 | 20,884 | 14,695 | 5,234 | 819 | 4,415 | 85.29 | 96.08 | 69.96 | -0.28 | -0.17 | -0.03 | ― | ― | ― |  
              | 2012 | 37,637 | 22,143 | 15,494 | 5,689 | 887 | 4,802 | 84.88 | 95.99 | 69.01 | -0.40 | -0.08 | -0.95 | -1.54 | 0.40 | -1.40 |  |