Jan ( N = 345 )

Feb ( N = 418 )

Mar ( N = 461 )

Apr ( N = 449 )

May ( N = 460 )

Jun ( N = 437 )

Jul ( N = 461 )

Aug ( N = 433 )

Sep ( N = 374 )

Oct ( N = 270 )

May ( N = 136 )

Jun ( N = 391 )

Jul ( N = 359 )

Aug ( N = 444 )

Sep ( N = 425 )

Oct ( N = 380 )

Nov ( N = 104 )

Dec ( N = 381 )