Jan ( N = 1865 )

Feb ( N = 1817 )

Mar ( N = 1980 )

Apr ( N = 2026 )

May ( N = 2339 )

Jun ( N = 2260 )

Jul ( N = 2319 )

Aug ( N = 2350 )

Sep ( N = 2279 )

Oct ( N = 1730 )

Nov ( N = 2052 )

Dec ( N = 1890 )