Slightly less than the percentage of Jews in each country (since Hanukkah is a Jewish festival and most but not all Jews celebrate it).
Hanukkah is a Jewish celebration:http://judaism.answers.com/jewish-holidays/hanukkah
There are about 14 million Jews in the world and a large percentage of them celebrate Hanukkah.
Hanukkah takes place in any country where there are Jewish people to celebrate it, which includes most of the countries of the world.
Jewish people celebrate Hanukkah. (They are not called "Hanukkah people")
Jewish people who live in England celebrate Hanukkah.
Yes, most Jewish people celebrate Hanukkah.
French Christians celebrate Christmas. French Jews celebrate Hanukkah.
Jewish people celebrate Hanukkah in every country where they live. Most Jews live in the US, Canada, Israel, and Europe.
This question makes no sense. It sounds like you're asking what to get people (who celebrate Hanukkah) for Christmas. People who celebrate Hanukkah do not want Christmas presents. They do not celebrate Christmas.
In Israel, because most of the population of Israel (75%) is Jewish.
Yes, Jews celebrate Hanukkah in many different countries.
Yes, since Hanukkah is a Jewish holiday.