The number of U.S. adults not having sex has reached a record high, according to a Washington Post analysis of data from the General Social Survey.

Twenty-three percent of respondents, or nearly 1 in 4, reported having no sex in the past year, according to the Post. More than 30 percent of adults reported having monthly sex and nearly 40 percent reported having sex weekly or more.

Young men between 18 and 30 years of age saw one of the biggest declines in sexual activity, with 28 percent saying they had no sex over the last year. The same data from 1989 shows just 14 percent of men of the same age range reporting no sex.

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Young women in the same age range, however, report higher rates of sexual activity, with only 18 percent saying they had no sex in the past year.

There are a number of reasons experts attribute to the decline in sexual activity, including technology, more people marrying or finding partners later in life and an increase in young men living at home.

The new analysis comes after data released by the Centers for Disease Control and Prevention (CDC) earlier this year showed a decline in sexual activity among high schoolers.

The January CDC report shows just over 41 percent of students in grades 9 through 12 reported having had sexual intercourse, down from almost 47 percent in 2005 and from 53 percent in 1995.

Just under a quarter of 9th graders reported having sex, down 10 percentage points from a decade ago, while the number of 10th graders with sexual experience declined by 7 points, according to the report.

CDC researchers similarly attributed the decline among teens to technology, social media and also federal spending to prevent teen pregnancy and sexually transmitted infections.