Jan ( N = 87 )

Feb ( N = 64 )

Mar ( N = 236 )

Apr ( N = 198 )

May ( N = 127 )

Jun ( N = 144 )

Jul ( N = 126 )

Aug ( N = 81 )

Sep ( N = 227 )

Oct ( N = 229 )

Nov ( N = 236 )

Dec ( N = 247 )