In 2015, Israel saw a 284 percent increase in the number of injuries resulting from terror attacks compared to 2014, even though the number of actual attacks slightly lessened, according to figures released by the Shin Bet on Tuesday.

A total of 239 people were wounded in terror attacks in 2015, compared to 63 the year before, the agency said. The majority of the 2015 injuries, 174 of them, occurred in the final three months of the year, as part of the wave of violence that continues to rock the country.

Twenty-eight people were killed in 2015 terrorist attacks, as opposed to 20 fatalities in 2014. Four more people have been killed in attacks since the start of 2016.

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The majority of last year’s fatalities occurred in attacks in the southern West Bank (12) and in Jerusalem (10). Two people were killed in Beersheba, two in Tel Aviv, and two in the northern West Bank.

Overall, 1,719 terror attacks were carried out in 2015, down from 1,793 in 2014.

In 2015, the Shin Bet, along with the army and police, arrested 3,100 Palestinians, a third of them Hamas members. Israel indicted 1,933 Palestinians for a variety of charges.

Security forces seized 143 rifles, 34 handguns, dozens of pipe bombs, tens of kilograms of explosive material, and shut down three bomb-making labs, according to the Shin Bet.

In addition, 41 Israeli citizens were arrested in 2015 for supporting the Islamic State.

There was no change in the number of Jewish terror attacks between 2014 and 2015 — 16 in both years. However, “there has been an increase in the severity of the attacks, and in the number of those injured, as a result of Jewish terror,” the Shin Bet stated, specifically noting the Duma firebombing attack, which left a Palestinian infant and his parents dead.

Three terror attacks were carried out by Arab Israelis in 2015.