Directly answering your question - No. There's a point of time where Latvia went EU route, namely 1995. Nothing changed at that time. The trend started in 1991

Directly answering your question - No. There's a point of time where Latvia went EU route, namely 1995. Nothing changed at that time. The trend started in 1991 (when USSR was split) continued until not very far past. The most important consequence of that trend is low fertility. I also would like to comment on your question. From what I saw in my life, happy people are fertile people. The people who feels support from all directions are fertile people. And also happy ones.