The historical five-year PEb and for selected stocks in the industry between 1991 and 1995 was about 10 to 100. The average PE during the period was 30. The industry is currently trading at a PE in the low teens.

• 从1991到1995年之间，这行业内某些股票的5年本益比历史波动大约是介于10至100。而在这期间的平均本益比是30。目前这行业是在本益比偏低的范围内交易。