How to extend a dataset

Excel Facts

What is the fastest way to copy a formula?
If A2:A50000 contain data. Enter a formula in B2. Select B2. Double-click the Fill Handle and Excel will shoot the formula down to B50000.
Hi,

Maybe I'm not understanding this correctly... I'm thinking all you need to do is:
1. copy your whole data set
2. paste in after the bottom, twice (now you have 3x your data set)
3. sort by ID, year

If this isn't doing it, please elaborate the requirement.

Tai
 
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