Jan ( N = 62 )

Feb ( N = 307 )

Mar ( N = 341 )

Apr ( N = 329 )

May ( N = 341 )

Jun ( N = 330 )

Jul ( N = 340 )

Aug ( N = 340 )

Sep ( N = 330 )

Oct ( N = 339 )

Nov ( N = 330 )

Dec ( N = 332 )