Srbin,
I agree that Serbian women should have many more children than they currently do...but there exists something called "population lag" that makes it very hard to determine what's happening until it's already well underway. Let me explain:
Take the example of any country in Europe, just for the sake of illustration I'll pick Spain.
When a country's population experiences a rapid decline in birth rate (as Spain did, they're now down to 1.25 or so children per woman), there is no immediate effect. The people that were part of the generation that had MORE children are still alive, and therefore the population will still grow even if the birth rate was 0.1 children per woman (although it would grow much slower). Now, assuming the trend continues and birth rate either drops or stays at a low level (as is the case with Spain), the population will continue to grow for quite some time...likely over 30 years. After that considerable time of slow growth, the adults who were part of the (forgive me for the overused term) "baby boom" generation will start dying. Since they did not have children at a high enough rate to replace themselves, the population will dramatically decrease.
The time between the numerical reduction in birth rate and the effects of that reduction on the population is called "population lag", which every European country is experiencing and is nearing the end of (except Albania and Turkey, but I don't consider them European in any way).
The point of all this? My point is that we can't simply have a "baby boom" for 10-15 years, because that would only negate the effects of the current "baby bust", rather it needs to go on for a longer period of time so we can have an actual increase in population, then once we have that going it can be acceptable to have a lower birthrate, but it must be at replacement level (i.e have enough kids to replace the parents, taking into consideration crime, diseases, and accidents..which would be something like 2.3 children per woman).
To illustrate just how dire the situation is at the moment, here are some statistics:
Top 10 countries by birth rate, % of muslim people in the country, population, birth rate1. Mali, 90% Muslim, 12 million people, 7.38 children/woman
2. [censored], 80% Muslim, 13 million people, 7.37 children/woman
3. Uganda, 12% Muslim, 30 million people, 6.84 children/woman
4. Somalia, 100% Muslim, 9 million people, 6.68 children/woman
5. Afghanistan, 99% Muslim, 32 million people, 6.64 children/woman
6. Yemen, 99% Muslim, 22 million people, 6.5 children/woman
7. Burundi, 10% Muslim, 8 million people, 6.48 children/woman
8. Burkina Faso, 50% Muslim, 14 million people, 6.41 children/woman
9. Democratic Republic of the Congo, 10% Muslim, 66 million people, 6.37 children/woman
10. Angola, No data on Muslims, 12 million people, 6.27 children/woman
Now, the opposite.
https://www.cia.gov/library/publications/the-world-factbook/rankorder/2127rank.htmlGo to the above website and scroll to the bottom of the list. The majority of the lowest-birth rate countries are European/Christian. Very sad.