From 1998 to 2011 , argentina 's energy output plummeted by a third .

1998年至2011年间，阿根廷的能源产量骤降了三分之一。

It 's no surprise his informal employee approval rating plummeted to just 25 % .

因此，他的非正式员工支持率跌至25%也就不足为奇了。

Orders from his u.s. clients have plummeted 25 % from last year .

源自美国客户的订单较去年锐减了25%。

But yields there have plummeted of late .

但最近这类债券的收益率暴跌。

And the divorce rate among college-educated women has plummeted .

而且受过大学教育的女性的离婚率也有很大的下降。