Append new data to an External Data table in Excel

If I have a table in Excel, populated via an external data connection,开发者_如何学Python how can I refresh the data in such a way as to insert new rows for new data, but keep the old rows as well?

For example, this is my table:

Unfortunately the database that I'm working with only holds onto the current month's data, so if I refresh, I'll only get February 2011's data back. The end result I want is:

Are there any built-in Excel options that I'm missing (similar to "External Data Properties"->"Insert entire rows for new data, clear unused cells") or should I go the programmatic route and save the old data in a temp table, etc?

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Since Excel external data is based on a query of the external source, Refresh will update to whatever is in that source. I think you will need to code a routine to append the external link data to another sheet