The Jewish population in Arab countries has decreased dramatically since 1945, when there were around 866,000 Jews living in the region:
1945: There were between 758,000 and 866,000 Jews living in Arab countries.
Today: There are fewer than 10,000 Jews in Arab countries.
Reasons for the exodus: The reasons for the exodus are varied and disputed, but include anti-Semitism, persecution, and duress.
Destination countries: The majority of Jews moved to Israel, France, and the United States.
That is from Google but I know that it is true, I have read about it in other news sources as well, persicution against jews has escalated.