给出一篇英文文章，要求助手将其翻译成中文。

英文文章：“The world's population is estimated to be around 7.7 billion people as of November 2018. It took centuries for the global population to reach one billion, but only a hundred years after that, the population had increased sevenfold. The current rate of population growth is estimated to be 1.1% per year, and it is projected that the world's population will reach 9.7 billion people by 2050.”
世界人口估计于2018年11月达到约77亿人。全球人口历经数个世纪才达到10亿人，但仅在此后的100年间，人口就增加了七倍。目前的人口增长率每年估计为1.1%，据预测，到2050年，世界人口将达到97亿人。