Deposits in the chinese currency in hong kong bank accounts also quadrupled last year .

去年，香港银行账户中的人民币存款增长了三倍。

The proportion of young people attending university has quadrupled .

年轻人中的大学生比例已经翻了两番。

The number of such marriages registered in hong kong quadrupled from 1996 to 2010 .

2010年在香港登记的这类婚姻已经达到1996年时的四倍。

Compared with last year , our production has quadrupled this year .

较之于去年，我们今年的产量翻两番。

Net income has nearly quadrupled .

净利润几乎翻了两番。