Jan ( N = 2 )

Feb ( N = 197 )

Mar ( N = 391 )

Apr ( N = 518 )

May ( N = 503 )

Jun ( N = 505 )

Jul ( N = 514 )

Aug ( N = 222 )

Sep ( N = 165 )

Oct ( N = 181 )

Nov ( N = 180 )

Dec ( N = 47 )