図1-1-8 65歳以上の者のいる世帯数及び構成割合(世帯構造別)と全世帯に占める65歳以上の者がいる世帯の割合,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,(千世帯/%),,,, ,,"昭和55 (1980)","60 (1985)","平成2 (1990)","7 (1995)","12 (2000)","17 (2005)","18 (2006)","19 (2007)","20 (2008)","21 (2009)","22 (2010)","23 (2011)","24 (2012)","25 (2013)","26 (2014)","27 (2015)","28 (2016)","29 (2017)","30 (2018)","令和元 (2019)","2 (2020)","3 (2021)" 世帯数,単独世帯,910,"1,131","1,613","2,199","3,079","4,069","4,102","4,326","4,352","4,631","5,018","4,697","4,868","5,730","5,959","6,243","6,559","6,274","6,830","7,369",,"7,427" ,夫婦のみの世帯,"1,379","1,795","2,314","3,075","4,234","5,420","5,397","5,732","5,883","5,992","6,190","5,817","6,332","6,974","7,242","7,469","7,526","7,731","8,045","8,270",,"8,251" ,親と未婚の子のみの世帯,891,"1,012","1,275","1,636","2,268","3,010","2,944","3,418","3,634","3,730","3,836","3,743","4,110","4,442","4,743","4,704","5,007","4,734","5,122","5,118",,"5,284" ,三世代世帯,"4,254","4,313","4,270","4,232","4,141","3,947","3,751","3,528","3,667","3,518","3,348","2,998","3,199","2,953","3,117","2,906","2,668","2,621","2,493","2,404",,"2,401" ,その他の世帯,"1,062","1,150","1,345","1,553","1,924","2,088","2,091","2,260","2,241","2,254","2,313","2,166","2,420","2,321","2,512","2,402","2,405","2,427","2,437","2,423",,"2,446" 総数,65歳以上の者がいる世帯,"8,495","9,400","10,816","12,695","15,647","18,532","18,285","19,263","19,777","20,125","20,705","19,422","20,930","22,420","23,572","23,724","24,165","23,787","24,927","25,584",,"25,809" 割合,単独世帯,10.7,12,14.9,17.3,19.7,22,22.4,22.5,22,23,24.2,24.2,23.3,25.6,25.3,26.3,27.1,26.4,27.4,28.8,,28.8 ,夫婦のみの世帯,16.2,19.1,21.4,24.2,27.1,29.2,29.5,29.8,29.7,29.8,29.9,30,30.3,31.1,30.7,31.5,31.1,32.5,32.3,32.3,,32 ,親と未婚の子のみの世帯,10.5,10.8,11.8,12.9,14.5,16.2,16.1,17.7,18.4,18.5,18.5,19.3,19.6,19.8,20.1,19.8,20.7,19.9,20.5,20,,20.5 ,三世代世帯,50.1,45.9,39.5,33.3,26.5,21.3,20.5,18.3,18.5,17.5,16.2,15.4,15.3,13.2,13.2,12.2,11,11,10,9.4,,9.3 ,その他の世帯,12.5,12.2,12.4,12.2,12.3,11.3,11.4,11.7,11.3,11.2,11.2,11.2,11.6,10.4,10.7,10.1,10,10.2,9.8,9.5,,9.5 一般世帯数,,"35,338","37,226","40,273","40,770","45,545","47,043","47,531","48,023","47,957","48,013","48,638","46,684","48,170","50,112","50,431","50,361","49,945","50,425","50,991","51,785",,"51,914" 割合,全世帯に占める65歳以上の者がいる世帯の割合(右目盛り),24,25.3,26.9,31.1,34.4,39.4,38.5,40.1,41.2,41.9,42.6,41.6,43.4,44.7,46.7,47.1,48.4,47.2,48.9,49.4,,49.7