The Maryland Lottery says the state’s two casinos generated more than $13.2-million last month, marking a decline for the first time this year. The Casino at Ocean Downs took in $3.69-million last month, up from $3.51-million in April. That was not enough to offset a $446,000 drop at the Hollywood Casino Perryville, which took in $9.61-million in May, down from roughly $10-million in April. State officials and analysts say the drop is not necessarily a cause for concern, as they are more focused on longer-term trends. The Casino at Ocean Downs has seen revenue increase each month and is expected to continue climbing as summer tourist season begins