Your choice : Stamps by type -> Documentation Page

Year of stamps of Documentation Page	Quantity
Doc:Documentation Page (From 1983 till 1986)	31
Doc:Documentation Page (From 1987 till 1990)	26
Doc:Documentation Page (From 1991 till 1994)	41
Doc:Documentation Page (From 1995 till 1998)	21
Doc:Documentation Page (From 1999 till 2002)	2