Jan ( N = 194 )

Feb ( N = 206 )

Mar ( N = 231 )

Apr ( N = 224 )

May ( N = 227 )

Jun ( N = 220 )

Jul ( N = 221 )

Aug ( N = 186 )

Sep ( N = 222 )

Oct ( N = 234 )

Nov ( N = 230 )

Dec ( N = 229 )