New Jersey’s online and retail sports betting declined 16 percent in April in the aftermath of college basketball’s March Madness. The state’s sportsbooks accepted $313.7 million in bets in April, down from $372.5 million in March, according to data released Tuesday by state regulators.

Sports betting generated $21.2 million in revenue, down 33 percent from $31.7 million in March, according to the New Jersey Division of Gaming Enforcement.

Sportsbooks accounted for about 8 percent of the total of $265.4 million in gambling revenue reported by casinos in April, which was up almost 24 percent from a year ago. The state launched sports betting in June, and two new casinos in Atlantic City opened last summer.

Bettors have now wagered $2.6 billion in sports bets since New Jersey became the first state outside of Nevada to launch sports betting in response to a U.S. Supreme Court decision a year ago that legalized sports betting.