Jan ( N = 297 )

Feb ( N = 280 )

Mar ( N = 328 )

Apr ( N = 399 )

May ( N = 440 )

Jun ( N = 320 )

Jul ( N = 490 )

Aug ( N = 443 )

Sep ( N = 350 )

Oct ( N = 363 )

Nov ( N = 256 )

Dec ( N = 226 )