1984
Have you tried their web site?
A answer cannot be given unless you provide more information,such as the serial number,condition of the rifle,and if the .22 cal rifle is a lever action,semi-auto etc.
Prior to 1973.
You MUST call Browning.
The F2000 assault rifle was developed in Belgium by Fabrique Nationale d'Herstal.
You will have to contact FN to find out.
100-1000 USD. You will have to conatct FN to find out about the history.
100-1000 USD or more depending on specifics
No way to answer without a description of ALL markings.
No sn data in the public domain that can answer your question.
Depends on your pocketbook.