Perhaps the simplest way is to ignore the dialogues. Instead:
• Press Ctrl-F9 to create a pair of field braces (i.e. { })
• Between the field braces, type 'SAVEDATE \@ YYYY', so you get {SAVEDATE \@ YYYY}
• Press F9 to update the field.
Note that I've suggested using a SAVEDATE field. That's so the field only updates whenever the document been (re-)saved, instead of updating just because you open it. Other possibilities include DATE, CREATEDATE and PRINTDATE. The CREATEDATE field records when the document was created, or last saved via Save As.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]