Americans’ support for a ban on semi-automatic guns in the U.S. has dropped eight percentage points from a year ago, when opinions were more evenly divided after the mass shooting in Las Vegas. Last year’s measure was unusually high for the trend over the past several years; the current 40% is back to within a few points of where it was between 2011 and 2016.

The latest findings, from an Oct. 1-10 survey, mark the eighth time since 1996 that Gallup has gauged public opinion on banning “semi-automatic guns, known as assault rifles.” These types of guns, which reload automatically but fire only once per trigger pull, have been used in a number of mass shootings in the U.S. in recent years.