population #populationpyramid #workingclass #oldpeople #populationdecline #agegroupIn this video we are going to see age structure of ... ... <看更多>

The median age in Taiwan is 40.7 years of age. This means that half of the population is aged over 40 years and will soon be unable to participate in the . ... <看更多>

The median age in Taiwan is 40.7 years of age. This means that half of the population is aged over 40 years and will soon be unable to participate in the . ... <看更多>