Jan ( N = 2353 )

Feb ( N = 2166 )

Mar ( N = 2342 )

Apr ( N = 2019 )

May ( N = 2170 )

Jun ( N = 2233 )

Jul ( N = 2292 )

Aug ( N = 2275 )

Sep ( N = 2213 )

Oct ( N = 2311 )

Nov ( N = 2275 )

Dec ( N = 2341 )