Download - wangyujian.hku.hkwangyujian.hku.hk/papers/hkej/HKEconomicJournal-26Sept2012.pdf 0 2011 1981 1991 94.9% , 1981 15.6% 1991 0 1981 52.0% 1991 Housing Authority, Memorandum for the Subsi-