Jan ( N = 399 )

Feb ( N = 363 )

Mar ( N = 403 )

Apr ( N = 389 )

May ( N = 400 )

Jun ( N = 390 )

Jul ( N = 390 )

Aug ( N = 403 )

Sep ( N = 390 )

Oct ( N = 399 )

Nov ( N = 389 )

Dec ( N = 400 )