Interesting analysis. Pretty much every Orthodox Christian population has a negative growth rate - some of this is probably due to Orthodox Christianity’s official acceptance of artificial birth control. And since Orthodoxy has had very little missionary presence outside of Alaska and Japan in the past thousand years, it does not have the Catholic situation where disobedient and infertile Europeans are at least being replaced by devout Africans, Asians and Hispanics.
Since Vatican II, pretty much every White and Middle Eastern Christian population has had a negative growth rate, but the Melkites are Roman Catholic, not Orthodox.