The following table shows the average birthrate and death-rate per thousand at stated periods.
A birthrate continuously in excess of the death-rate tends to lower the latter through the supply it affords of people annually reaching the more healthy ages.
We have an aging population and a declining birthrate - the mathematics say the money just won't be there.
The impact on Germany is especially high, since the country has the lowest birthrate in Western Europe.
There are also demographic problems, caused by a falling birthrate in the North and high birthrate in parts of the South.