Mail Merge variable table length

[ajohnson]

I am doing a mail merge from an excel sheet into a table in word. My problem is that the excel file is downloaded from another system and sometimes the excel file contains say 10 records and thus needs 10 rows and other times it may be more than a hundred. I need the table to 'fit' the number of records so that I don't have to create a table with hundreds of rows when only 10 will be used. Is there any way I can do this within word?
Aaron