The housing stock expands only slowly because it is so durable, so the increase in demand for houses outran the increase in supply (new housing starts), causing prices to rise.

• 因为住房是耐用品，所以，房地产股票涨得很慢，这样，住房需求的增长，就超过了住房供给（新建房屋）的增长，这使得价格上升。