Jan ( N = 1868 )

Feb ( N = 1817 )

Mar ( N = 1980 )

Apr ( N = 2027 )

May ( N = 2340 )

Jun ( N = 2262 )

Jul ( N = 2322 )

Aug ( N = 2352 )

Sep ( N = 2280 )

Oct ( N = 1730 )

Nov ( N = 2049 )

Dec ( N = 1886 )