강남에 특히 집중되 있고
https://www.kiso.or.kr/%EC%95%8C%EB%A6%BC%EB%A7%88%EB%8B%B9/%EC%A3%BC%EC%9A%94-%EA%B3%B5%EA%B0%9C%EC%82%AC%ED%95%AD/%EA%B1%B0%EC%A7%93%EB%A7%A4%EB%AC%BC%EC%8B%A0%EA%B3%A0%EC%B2%98%EB%A6%AC%ED%98%84%ED%99%A9/?uid=1430&mod=docunemt&pageid=1
0/2000자