Jan ( N = 975 )

Feb ( N = 834 )

Mar ( N = 1014 )

Apr ( N = 928 )

May ( N = 828 )

Jun ( N = 749 )

Jul ( N = 946 )

Aug ( N = 1039 )

Sep ( N = 505 )

Jan ( N = 757 )

Feb ( N = 777 )

Mar ( N = 751 )

Apr ( N = 776 )

May ( N = 1039 )

Jun ( N = 927 )

Jul ( N = 933 )

Aug ( N = 673 )

Sep ( N = 947 )

Oct ( N = 924 )

Nov ( N = 1021 )

Dec ( N = 1065 )

Jul ( N = None )

Aug ( N = 395 )

Sep ( N = 983 )

Oct ( N = 811 )

Nov ( N = 929 )

Dec ( N = 859 )