Your question is not very clear.
But if the question is: How can I get a count of rows added to each table per month of year, the answer is that you can't in the general case, since this is nothing that SQL Server tracks out of the box.
But it is not uncommon when you design tables, that you have an auditing column named CreateTime or something of the kind that defaults to sysdatetime() or getdate() and which never changes. So if your tables have such a column, you can get this information this way.