Jan ( N = 1127 )
Feb ( N = 1060 )
Mar ( N = 1171 )
Apr ( N = 1139 )
May ( N = 1148 )
Jun ( N = 1018 )
Jul ( N = 1031 )
Aug ( N = 1049 )
Sep ( N = 1066 )
Oct ( N = 745 )
Mar ( N = None )
Apr ( N = 987 )
May ( N = 1050 )
Jun ( N = 1104 )
Jul ( N = 1077 )
Aug ( N = 1027 )
Sep ( N = 1042 )
Oct ( N = 1168 )
Nov ( N = 1138 )
Dec ( N = 1051 )