Jan ( N = 31 )

Feb ( N = 28 )

Mar ( N = 31 )

Apr ( N = 25 )

May ( N = 6 )

Jun ( N = 17 )

Jul ( N = 22 )

Aug ( N = 23 )

Sep ( N = 5 )

Oct ( N = 6 )

Nov ( N = 11 )

Dec ( N = 10 )