Jan ( N = 35 )

Feb ( N = 20 )

Mar ( N = 20 )

Apr ( N = 21 )

May ( N = 19 )

Jun ( N = 14 )

Jul ( N = 11 )

Aug ( N = 12 )

Sep ( N = 17 )

Oct ( N = 18 )

Nov ( N = 28 )

Dec ( N = 23 )