I want to know the answer to the following question:
According to Daniel Elazar at the Jerusalem Center for Public Affairs, at the end of the 11th century, what percentage of the world's Jewry was Ashkenazi?
All the background I'm provided with is that "These factors are sheer demography showing the migration patterns of Jews from Southern and Western Europe to Central and Eastern Europe.". Is that enough to answer the question?
Answer: no