Israel has enumerated its Jewish population by their continent of birth since 1948 .
However , Israel has used the religion question on its census to determine the ethnic composition of its population from 1948 to the present day .
Israel has enumerated Israel 's Jewish population by their continent of birth since 1948 .
However , Israel has used the religion question on its census to determine the ethnic composition of its population from 1948 to the present day .