The World Passport in this respect has a track record of over 60 years acceptance since it was first issued. Today over 185 countries have visaed it on a case-by-case basis. In short, the World Passport represents the one world we all live in and on.
Median age* of the population. Over the past 50 years, the median age of the world's population has increased by a mere three years, from 23.6 in 1950 to 26.4 in 2000. (The median marks the point where half the population is older than that age and half is younger). But over the next 50 years, the median age will jump to 37, according to the latest projections made by the United Nations. By 2050, 17 developed countries are expected to have a median age of 50 or more.
Methodology [edit]. Median age is the age that divides a population into two numerically equal groups-that is, half the people are younger than this age and half are older. It is a single index that summarizes the age distribution of a population. Currently, the median age ranges from a low of about 15 in Uganda to 40 or more in several European countries, Canada and Japan.