Jan ( N = 7 )

Feb ( N = 81 )

Mar ( N = 90 )

Apr ( N = 90 )

May ( N = 92 )

Jun ( N = 86 )

Jul ( N = 88 )

Aug ( N = 86 )

Sep ( N = 78 )

Oct ( N = 91 )

Nov ( N = 88 )

Dec ( N = 89 )