Q. wrote: No, not economic refugees, the overwhelming majority are found to be genuine refugees.
Just a note of cautious scepticism about trusting completely the conclusions (or consensus) of authorities - be it in this case or scientific conclusions.
Being "found to be genuine refugees" could mean that in some cases the applicant or their representative put up a good story that couldn't be refuted and get the benefit of the doubt. It is like the findings of courts - wrong convictions occur, and on the other hand the guilty sometimes get off.
I expect that in time the big growth will be in refugees from starvation and poverty, more than from war and persecution. That seems inevitable as world population grows. What concerns me is that, in the long run, if we totally share the wealth of food and resources we'll all be hungry and resource poor relative to what we have now in our society. The moral dilemma, then, is do we preserve ourselves or accept being part of the decline of quality of life for all due to overpopulation.