Introduction
Population ageing is currently viewed as most wide-spread demographic trend. Decreasing fertility and increasing life expectancy have tremendously altered the ratio between the young and old in current population of the world. Global UN research on population ageing (2007) suggests that population ageing is concerned with four salient aspects, such as being unprecedented in human history; pervasiveness of the trend, which is now affecting almost all parts of the world; enduring nature of the trend (the situation is not likely to be subjected to significant changes; and, what is more important, the trend’s having profound consequences for almost ...