Jan ( N = 2173 )

Feb ( N = 1987 )

Mar ( N = 2198 )

Apr ( N = 2112 )

May ( N = 2137 )

Jun ( N = 2117 )

Jul ( N = 2186 )

Aug ( N = 2161 )

Sep ( N = 2070 )

Oct ( N = 2153 )

Nov ( N = 2125 )

Dec ( N = 2168 )