Jan ( N = 520 )

Feb ( N = 330 )

Mar ( N = 185 )

Apr ( N = 475 )

May ( N = 516 )

Jun ( N = 471 )

Jul ( N = 457 )

Aug ( N = 322 )

Sep ( N = 408 )

Oct ( N = 415 )

Nov ( N = 366 )

Dec ( N = 407 )