Jan ( N = 52 )

Mar ( N = 558 )

Apr ( N = 1722 )

May ( N = 892 )

Jun ( N = 1393 )

Jul ( N = 1785 )

Aug ( N = 1451 )

Sep ( N = 1446 )

Oct ( N = 1620 )

Nov ( N = 1680 )

Dec ( N = 1011 )