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These days, everything is moving faster in the U.S., except for population growth.

According to the U.S. Census Bureau figures released Monday, growth from July 1, 2012 through July 1, 2013 was 2.3 million people, or 0.71 percent of the total U.S. population.

That's less than last year's 0.75 percent growth, and the slowest rate since 1937.

Census Bureau researchers say the slow expansion of people in the country is due to Baby Boomers, by far the largest segment of the population, getting older, as well as fewer immigrants entering the U.S.

Meanwhile, in case you're interested, the U.S. population when the clock hits midnight Tuesday will stand at 317,297,938, give or take a few people. That's an increase of 2,218,622 from last New Year's Day.