Your choice : Stamps by type -> Proof

Year of stamps of Proof	Quantity
Proof:Proof (Year unknown)	3
Proof:Proof (From 1968 till 1971)	2
Proof:Proof (From 1980 till 1983)	7
Proof:Proof (From 1984 till 1987)	14
Proof:Proof (From 1988 till 1991)	10
Proof:Proof (From 1992 till 1995)	26
Proof:Proof (From 1996 till 1999)	26
Proof:Proof (From 2000 till 2003)	2
Proof:Proof (From 2004 till 2007)	4
Proof:Proof (From 2008 till 2011)	2