The following chart represents births in the United States per 1,000 people. The segment in red demarcates the birth years between 1946 and 1964, which is generally considered to represent the Post-World War II population spike known as the Baby Boom. Besides this jump, we have for the most part been seeing declining birth rates.
“US Birth Rates” by Saiarcot895. Licensed under CC0 via Wikimedia Commons.
Given the magnitude of this population segment, demographers and others love to talk about the impact that this generation has had and will continue to have on society, particularly as many Baby Boomers now start to enter retirement.