Jan ( N = 10 )

Feb ( N = 11 )

Mar ( N = 21 )

Apr ( N = 14 )

May ( N = 14 )

Jun ( N = 8 )

Jul ( N = 17 )

Aug ( N = 2 )

May ( N = 20 )

Jun ( N = 29 )

Jul ( N = 8 )

Aug ( N = 14 )

Sep ( N = 21 )

Oct ( N = 6 )

Nov ( N = 7 )

Dec ( N = 4 )