Also at Global Trends 2030, a piece on the ethnic future of Western Europe by Eric Kaufmann.
1-Immigration will not compensate for an ageing population:
immigrants’ age and their family sizes converge to host levels, thus the number of immigrants required to maintain a given age structure multiplies exponentially
2-Total immigration will probably remain at about 1 million per year.
3-By 2050 native-born white share of Europe’s population is projected to decline from 95 to about 85 percent. About half the minority growth in Europe will be Muslim. England is likely to be 25% minority in 2050. In Sweden Muslims will comprise nearly 14% of the population in 2030. Muslims will double in number in most countries over the next twenty years.