Jan ( N = 90 )

Feb ( N = 86 )

Mar ( N = 93 )

Apr ( N = 90 )

May ( N = 93 )

Jun ( N = 90 )

Jul ( N = 93 )

Aug ( N = 93 )

Sep ( N = 90 )

Oct ( N = 93 )

Nov ( N = 89 )

Dec ( N = 93 )