It's not up for debate as theliq said... and everybody here (except Montelatici) is neglecting the fact that most of these 5% were palestinian jews, the only native Jews of Palestine...
Individuals who had absolutely nothing to do with the creation of Israel, much to the contrary... they vehemently opposed it.
For the purpose of "justifying" the state of Israel, arab Jews must be totally disregarded, ignored if you are debating the issue in good faith... and we all know a lot of people don't.
Only the european Jews who conceived the idea of a jewish state and implemented it decades later should be counted as the jewish population of Palestine as far as the zionist movement and the founding of Israel is concerned.
The askhenazim (Israel's founders) did not make up 5% of Palestine's population by any stretch.... try 0,5%.
The palestinian Jew who appears praying in Jerusalem in this extraordinary, fantastic video must be rolling in his grave seeing zionists today cynically, dishonestly (mis)using his historic presence in Palestine to justify Israel's creation, to present Palestine as the historic "homeland" of Ukrainians, Belarussians and Poles.