Baby names go in and out of style like fashion trends — what's popular one year may not be so hip a few years down the road.
Take Mary, for example.
Mary was once the most popular girl's name in America for more than 60 years, but today it isn't even among the 100 most common names for girls, according to the Social Security Administration, which has tracked the popularity of baby names dating back to 1880. At its peak in the early 1920s, there were more than 70,000 girls born with the name Mary each year, but in 2016, that number had plummeted to just over 2,000.
