Taiwan's working-age population in 2070 is projected to shrink to less than half of the current total, a government agency said, as the self-ruled island has been struggling to counter security threats from China.The number of the working-age population, or people aged 15 to 64, is estimated to drop from this year's 16.3 million to 15.07 million in 2030 and to 7.76 million in 2070, according to a report released last week by the National Development Council.The agency also said that Taiwan, which has been confronted with a serious aging phenomenon in the aftermath of the low birthrate, will…READ FULL ARTICLE