Uring the "baby boom" era that lasted from 1946 to 1964, approximately how many babies were born in the u. s

In 1947, another 3.8 million babies were born; 3.9 million were born in 1952; and more than 4 million were born every year from 1954 until 1964, when the boom finally tapered off. By then, there were 76.4 million “baby boomers” in the United States. They made up almost 40 percent of the nation's population.

What is this from lol