Jan ( N = 87 )

Feb ( N = 63 )

Mar ( N = 238 )

Apr ( N = 168 )

May ( N = 139 )

Jun ( N = 132 )

Jul ( N = 120 )

Aug ( N = 83 )

Sep ( N = 216 )

Oct ( N = 228 )

Nov ( N = 241 )

Dec ( N = 246 )