I take issue with the statement by @someday that Israel had Shmad up 1 million people. We know that Jews living in USA, France, South America left Yiddishkeit at significantly higher rates than those in Israel. In USA, 10% or fewer remained frum and the rest intermarried and are gone. Same is true everywhere else. They are never coming back. They are gone for good. In Israel for every yid that left observance you have 5 yiddin who are chozen btshuva and very very few are intermarried and gone. They are all there still to be chozer btshuva sooner or later.
This is not a defense of the Israeli policies over the years but statistically, a Yid had a much better chance remaining a Yid in Israel over any where else.