Maryland’s six casinos had their second-best revenue month in December while its newest casino set a new personal best.

Figures released Friday by the Maryland Lottery and Gaming agency show the state’s six casinos generated revenue of $141m in the month of December, second only to the $141.2m generated in March 2017.

The $141m earned last month was up 5.7% from the $133.5m generated in the same month last year. MGM Resorts’ National Harbor casino opened its doors in the first week of December 2016, making this past December the first month in which direct year-on-year comparisons are possible.

To celebrate its first birthday, National Harbor topped the revenue charts (again) with just under $56.6m, topping the property’s previous record of $52.9m set last August. National Harbor’s slots revenue improved nearly 19% to $29m while the property’s table games shot up 57% to $27.6m. National Harbor topped the state’s revenue chart every month last year except February.