Jan ( N = 2336 )

Feb ( N = 2156 )

Mar ( N = 2383 )

Apr ( N = 2264 )

May ( N = 2207 )

Jun ( N = 2310 )

Jul ( N = 1667 )

Aug ( N = 2386 )

Sep ( N = 2082 )

Oct ( N = 1585 )

Nov ( N = 1428 )

Dec ( N = 2387 )