Despite a rapid expansion of state-sanctioned gambling in recent years, revenue has been relatively weak, a report from the Rockefeller Institute of Government found.

The report, released on Monday, found gambling revenue in 2014 weakened overall in states that have casinos, lotteries or pari-mutuel wagering.

Nationally, revenue from gambling for states was largely flat, increasing by 0.6 percent between 2013 and 2014.

In New York, there was an uptick in revenue from the lottery and racinos, with overall gambling dollars increasing from $30 million in 2013 to $31.2 million in 2014.

Revenue from racinos in particular jumped 7.7 percent alone between 2013 and 2014.

While that accounts for a 3.2 percent increase overall, gambling companies in New York are opening up to four new resort-style casinos in Schenectady, the Catskills and in the Finger Lakes, with gambling regulators due to award a fourth license to a Binghamton-area project as well.

Revenue from casinos nationally has fallen 1.4 percent over the last year, the Rockefeller Institute study found.

Casinos have been billed as revenue generators not just for the state, but also the municipalities that host them, with promises of job creation and increased school aid as a result.