Japan’s estimated child population shrank for the 43rd consecutive year to renew its record low, government data showed Saturday, while Prime Minister Fumio Kishida’s government scrambles to address the issue through “unprecedented” measures. The number of children aged 14 or younger, including foreigners, was 14.01 million as of April 1, down 330,000 from a year ago, according to data released by the Ministry of Internal Affairs and Communications before the national Children’s Day holiday on Sunday. The ratio of children to the overall population fell 0.2 percentage point to 11.3 percent, al…