Jan ( N = 91 )

Feb ( N = 67 )

Mar ( N = 238 )

Apr ( N = 226 )

May ( N = 142 )

Jun ( N = 148 )

Jul ( N = 127 )

Aug ( N = 81 )

Sep ( N = 229 )

Oct ( N = 231 )

Nov ( N = 234 )

Dec ( N = 247 )