I don't see how you can possibly say that. If in 2007 you went to 100 jobs you would see 18.3% of foreign born people holding them vs 23.7% now. This is a change of nearly 30%. Of course people notice this and are concerned about it.
I am not arguing against immigration in any way (I am both an immigrant and a refugee), but I do recognize why someone who sees this on the ground feels the way they do.