Jan ( N = 400 )

Feb ( N = 384 )

Mar ( N = 422 )

Apr ( N = 399 )

May ( N = 431 )

Jun ( N = 419 )

Jul ( N = 434 )

Aug ( N = 429 )

Sep ( N = 407 )

Oct ( N = 300 )

Nov ( N = 148 )

Dec ( N = 370 )