Feb ( N = 248 )

Mar ( N = 1168 )

Apr ( N = 1140 )

May ( N = 1177 )

Jun ( N = 1125 )

Jul ( N = 1163 )

Aug ( N = 1175 )

Sep ( N = 1140 )

Oct ( N = 905 )

Nov ( N = 501 )

Dec ( N = 715 )