Jan ( N = 729 )

Feb ( N = 288 )

Mar ( N = 466 )

Apr ( N = 494 )

May ( N = 502 )

Jun ( N = 488 )

Jul ( N = 510 )

Aug ( N = 504 )

Sep ( N = 491 )

Oct ( N = 502 )

Nov ( N = 485 )

Dec ( N = 506 )