Jan ( N = 2041 )

Feb ( N = 1886 )

Mar ( N = 511 )

Apr ( N = 2136 )

May ( N = 2371 )

Jun ( N = 1796 )

Jul ( N = 2134 )

Aug ( N = 2137 )

Sep ( N = 2253 )

Oct ( N = 2307 )

Nov ( N = 2186 )

Dec ( N = 1900 )