But just looking at the latest data, it does look like there might be some stability in the market at this point,"

VOA: standard.2009.08.25

This is since 1802-- now how many countries do you think have uninterrupted stock market data since 1802?

西格尔使用的数据始于1802年...,你们想想现在有多少的国家,存有从1802年以来,股票市场的完整数据呢

耶鲁公开课 - 金融市场课程节选

Why not? Well, they can't get data, there wasn't a stock market.

为什么呢,因为作者无法得到数据,两国没有股票市场

耶鲁公开课 - 金融市场课程节选