Compléter Unit 13 BVersion en ligne Gap fill 2 for Unit 13 par John E 1 If current continue , then in some the population is expected to within the next 50 years . This problem is by the fact that not only is the number of inhabitants , but they are also growing older . This aging population will bring its own . At present there are sufficient people to earn money and pay taxes to support the . However , within 50 years this will not be the case . There are possible factors to the problem . First , birth rates in these are clearly failing . Second , there could be an increase in the number of people migrating away from these . The aging and population is expected to have important for the labor force and the quality of everyday .