 
<prompt> Trends in early sexual intercourse | Percentage who had first sexual intercourse by age 18 | (Women age 25-49, 1990 NDHS, 57) (Women age 25-49, 2003 NDHS, 63) (Men age 25-49, 2003 NDHS, 23) (Women age 25-49, 2008 NDHS, 53) (Men age 25-49, 2008 NDHS, 23) (Women age 25-49, 2013 NDHS, 54) (Men age 25-49, 2013 NDHS, 19) (Women age 25-49, 2018 NDHS, 57) (Men age 25-49, 2018 NDHS, 15) <response> The percentage of women who have had sexual intercourse by age 18 has increased since 2013 (from 54% to 57%), while the percentage among men has declined (from 19% to 15%).  