Your choice : Stamps by type -> Maxi card by WWF

Year of stamps of Maxi card by WWF	Quantity
MC:Maxi card by WWF (From 1983 till 1986)	28
MC:Maxi card by WWF (From 1987 till 1990)	33
MC:Maxi card by WWF (From 1991 till 1994)	11
MC:Maxi card by WWF (From 1999 till 2002)	9
MC:Maxi card by WWF (From 2003 till 2006)	11
MC:Maxi card by WWF (From 2007 till 2010)	13