What percentage of Polish Jews wanted to emigrate during the interwar era?

Futurist

Ad Honoris
May 2014
21,898
SoCal
Do we have any idea as to what percentage of Polish Jews wanted to emigrate during the interwar era? Also, what about for other Eastern and Central European countries (in regards to Germany, I'm asking before the Nazis actually came to power there)?

Also, I'm presuming that most Soviet Jews were content living in the Soviet Union until the post-WWII era of anti-Semitism began there, correct?