Not all Maryland's casinos are performing well.

Hollywood Casino Perryville, which opened in September 2010 and is the state's oldest, continues to see its revenue slide with competition from newcomers. The casino reported revenue from slot machines and table games of $7.78 million in June, down 2.17 percent from a year earlier. The Cecil County casino is home to 1,158 slots machines and 22 table games. It launched table games in March.

Meanwhile, revenue rose at the Casino at Ocean Downs, reaching $4.81 million last month, or 9.4 percent more than a year ago. The Worcester County casino operates 800 slot machines.

Rocky Gap Casino and Resort generated $2.48 million last month. It runs 558 slot machines and 10 table games.

A percentage of the revenue generated by the casinos goes toward supporting schools, racetracks and small businesses. Gov. Martin O'Malley said in a statement that the casino program exists to generate funds for Maryland's public schools and to create jobs here.

"We are pleased that, during this past fiscal year, the goal has not only been met but the program has exceeded expectations," he said.

Annual revenue from Md. casinos

Total revenue for fiscal year ended June 30: $608.3

Education Trust Fund: $284.3 million

Horse Racing Purse Dedication: $39.1 million

Local Impact Grants: $30.7 million

Racetrack Facility Renewal Account: $10.8 million

Maryland Lottery: $11.2 million

Small, Minority, and Women-Owned Business: $8.38 million

Casino operators: $223.8 million

Source: Maryland Lottery and Gaming Control Agency

ryland Lottery and Gaming Control Agency