A、Happy life the seniors enjoy nowadays. B、Problems of the aging population. C、A survey about economic growth. D、The rapid pace

In Japan, there are special playgrounds for the elderly. In Italy, dance classes for seniors are part of the good life. And in Germany, the rapid pace of retirements has become a bigger issue than unemployment.
    They are the world’s super-aged nations—the term for countries where at least 20 percent of the population is 65 years or older. The population’s transition is upon us now and its progressing, by historical standards, quite rapidly.
    In five years, six more countries will join the ranks of the super-aged. [2]And in 15 years, that number will rise to 34. That will translate into reductions in labor supply. At the same time aging means that the household savings rates will go down, which will negatively impact on investment. Both trends put together would mean that aging will have a significant negative impact on global growth.
1 What is the news report mainly about?
2 How many countries will become super-aged in 15 years?