GAINESVILLE, Fla. (AP) — Unprovoked shark attacks around the world decreased last year, although they rose in the United States, according to researchers.

There were 64 confirmed unprovoked shark attacks worldwide last year, compared to the most recent five-year-average of 82 unprovoked attacks, according to researchers with the International Shark Attack File.

The shark trackers said Tuesday in a news release that they don’t give much significance to short-term trends since annual fluctuations in shark-human interactions are common.

Unprovoked attacks occur when there is no human provocation. Provoked attacks are defined as when humans initiate contact, such as divers trying to touch a shark or fishermen removing a shark from a fishing net, according to the International Shark Attack File.

The United States had almost two-thirds of the unprovoked attacks, or 41 cases, an increase from 32 incidents in 2018, according to the International Shark Attack File.