Group dates by month without Pivot Table

Hi guys

I have a spreadsheet with dates and I'd like to count how many customers joined in which month,  without the use of Pivot Tables.
Any ideas how you'd solve this?

Thanks
Massimo

Customers.xlsx
Dates.JPG
Asked:
Who is Participating?

Commented:
massimo - that was jppinto's formula (I think the problem is with those blanks). I tried mine and it works

=SUM(IF(Kunde_seit<>"",IF(MONTH(Kunde_seit)=ROW()-1,1,0)))

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Commented:
If I understand correctly, this array formula in E2 and down:

=SUM(IF(Einakufsdatum<>"",IF(MONTH(Einakufsdatum)=ROW()-1,1,0)))

Use Ctrl+Shift+Enter to enter formula.

What's wrong with PTs though?
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Commented:
You can do it with a formula like this:

=SUMPRODUCT((MONTH(\$A\$2:\$A\$14)=1)*(YEAR(\$A\$2:\$A\$14)=2011))

Please take a look at the attached file to see how it works.

jppinto
Count-Months.xlsx
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Author Commented:
@Stephen: I tried your formula but it doesn't work. I get an error message. Regarding the PTs. My boss asked me not to use PT

@jppinto: I tried your formula but it seems that it doesn't work if there are spaces in between the rows. These empty spaces are the dates when I don't know/remember when the customer was added to the spreadsheet. Or is the error message caused because I use a named range? #WERT = #VALUE

massimo
Copy-of-Dates.JPG
Copy-of-Count-Months.xlsx
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Commented:
massimo - did you use Ctrl+Shift+Enter so that curly brackets appear round the formula?
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Author Commented:
hi Stephen

Yes, I did press Ctrl+Shift+Enter but it doesn't work. I attached the spreadsheet to my previous post.
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Author Commented:
Yes, now it works.
Thanks a lot guys.
I wish I could give you more points  :-/

Have a nice day

Massimo
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