Information outflow

摘要

The United States' population is growing at a rate of one percent a year, and even with lower fertility rates this trend will probably continue. If the fertility rate dropped to 2.1 children per woman, the population of the country would level off in the year 2037 at 267 million. But, this would require an unlikely 50 percent decrease in the birth rate. UPDATE: Those projections recently veered off course. As of April 2020,331.5 million people lived in the United States, census data show. But from July 2019 to July 2020, the population grew by just 0.35 percent - the lowest annual growth rate in over a century. For most of the last 50 years, the population grew by about 1 percent per year, partly thanks to immigration. While the fertility rate dropped below 2.1 children per woman after 1971 and the birth rate declined by 29 percent between 1970 to 2014, the foreign-born population quadrupled to over 40 million people. But immigration has slowed. In 2020, the fertility rate dropped to a record low of 1.64 children per woman.