Count each unique value and give running total

Hi Experts

Need a bit of help on this issue please.

In column A, I have several thousand names of clients.  What I need to do is
to count each unique value and assign the running total in column B.  See example.  Column A is my original list and column B is what I need to create.

Column A                           Column B

John                                          1
John                                          2
Mary                                         1
Joe                                            1
Joe                                            2
Fred                                          1
John                                          3

Thanks so much in advance.

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John EastonDirectorCommented:
Assuming the data starts in cell A1 then type the below in cell B1 and drag or fill down:


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pls try


spudmccAuthor Commented:
Thanks to you both so much for the quick response.  I was hoping it would be easy.  
You both came up with the same solution at almost the same time so I hope you are alright with me splitting the points.  

Thanks again

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Microsoft Excel

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