Across the globe, teenage pregnancy rates have been falling for at least the last 10 years but social scientists still don’t fully understand the reasons why. In England in 2008, about 39,000 girls under the age of 18 became pregnant, a rate of 40 per 1,000. By 2018 the rate had gone down to just under 17 per 1,000a drop of nearly 60 per cent.