給水人口の移り変わり (人) 86,302 86,100 91,567 93,781 H18 H23 74,317 74,176 61,739 47,663 S30 S40 S50 S60 H8 H13 (年度) 100,000 90,000 80,000 70,000 60,000 50,000 40,000 30,000 20,000 10,000 0
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