Jan ( N = 2171 )

Feb ( N = 1915 )

Mar ( N = 2203 )

Apr ( N = 2178 )

May ( N = 2254 )

Jun ( N = 2188 )

Jul ( N = 2155 )

Aug ( N = 2071 )

Sep ( N = 2118 )

Oct ( N = 2144 )

Nov ( N = 2094 )

Dec ( N = 2230 )