Jan ( N = 250 )

Feb ( N = 236 )

Mar ( N = 188 )

Apr ( N = 199 )

May ( N = 201 )

Jun ( N = 296 )

Jul ( N = 391 )

Aug ( N = 529 )

Sep ( N = 578 )

Oct ( N = 319 )

Nov ( N = 150 )

Dec ( N = 160 )