A family member is an expert in this area working for the government in a high position for a long time and they update quarterly the estimations on when the system will fall, not if. The current calculation is less than 15 years and it is fairly constant for the past 10-15 years. In the discussions they have between countries the situation varies a lot, from countries that are going from default to default like Greece) or close (PIGS) to countries that are almost stable (Germany), but on average the situation is bad.

For example I was told 10 years ago never to expect to retire because there will be no money for the public pension system when I will have the age. It is on an accelerating fall and the politicians are messing it up even further, pensions were increased by law by 40% about a year ago: if there is no future, you can start ruining the present.