The first NID could be conducted as early as 21 June, and will aim to reach the entire population of the country (two million), rather than the usual under-five year population.

第一个国家免疫日可尽早于6月21日举办，旨在普及到该国全体人口(200万)，而不是通常的5岁以下人口。

youdao

Population growth is decreasing by 1.4% each year.

人口增长每年下降1.4%。

《柯林斯英汉双解大词典》

The population is increasing at about 6% per year.

人口以每年约6%的速度增加。

《牛津词典》

But this year, experts say the butterfly population has dropped by as much as fifty percent.

VOA: special.2010.04.27

That is twelve percent more than last year, and equal to two-thirds of the world's population.

VOA: special.2009.11.02

by June of next year. That is almost one-third of its population.

VOA: special.2010.04.28

The population figures are based on mid-year population estimates for 2000.

BBC: News | Cracking Crime

Brood X, it seems, is splitting up, and a new 13-year cicada population is evolving.

ECONOMIST: The 17-year cicadas are about to emerge in force

If Democrats do defy history next year, population changes will underlie the move, just as demographics did in the Obama-Romney contest.

WSJ: Larry Sabato and Kyle Kondik: The Early Line on the 2014 Midterms