Count average per month

Hello all

I would like to kindly ask you for favor.

I am getting a report every month with data covering last three months (see example in the attachment). On the "raw" sheet are the data what I got for processing. I would like to have a macro which will count average of data in column "D" for every month separately. Then the result will be loaded to a table like you can see on the "avg" sheet. The macro should be executable by hitting the "count" button. Pivot table is not applicable as this is just a part of a complex solution where pivot table can not be used.

All replies are appreciated.

Thank you in advance.