Jan ( N = 21 )

Feb ( N = 100 )

Mar ( N = 434 )

Apr ( N = 402 )

May ( N = 391 )

Jun ( N = 365 )

Jul ( N = 356 )

Aug ( N = 341 )

Sep ( N = 305 )

Oct ( N = 309 )

Nov ( N = 270 )

Dec ( N = 266 )