Christopher Furlong/Getty Images Terror threat keeps Belgians awake at night One in five believe another attack is likely.

One in three Belgians changed their behavior after last year's Brussels attacks, figures released Monday show.

An annual survey by the Belgian Road Safety Institute, in which people were asked about their sense of safety in general, shows that the March attacks on Brussels airport and Maalbeek metro station have affected people’s daily lives.

“People have been avoiding crowded places, such as shopping centers or cinemas. And they have become more distrustful toward strangers,” a spokesperson said, according to local media.

Some 20 percent of the 2,100 people questioned believe another attack is likely. Half of the respondents said the prospect of a terror attack was keeping them awake at night.

More than half of respondents said there is no real solution to terror threats, and 84 percent said terror threats are now part of everyday life.