Your choice : Stamps by type -> Imperforated Set

Year of stamps of Imperforated Set	Quantity
Imp:Imperforated Set (From 1976 till 1979)	1
Imp:Imperforated Set (From 1980 till 1983)	3
Imp:Imperforated Set (From 1984 till 1987)	8
Imp:Imperforated Set (From 1988 till 1991)	6
Imp:Imperforated Set (From 1992 till 1995)	10
Imp:Imperforated Set (From 1996 till 1999)	12
Imp:Imperforated Set (From 2000 till 2003)	7
Imp:Imperforated Set (From 2004 till 2007)	11
Imp:Imperforated Set (From 2008 till 2011)	4