The Generation "Y"

People born in different point in time are categorized into different generation. For instance:-

People born between 1925 and 1945 are called THE SILENT GENERATION
People born between 1946 and 1964 are called THE BABY BOOMERS
People born between 1965 and 1982 are called THE GENERATION X
People born after 1983 are called THE GENERATION Y
BUT....................Y
But why do we called those born after 1983 people as Generation Y?
A picture is worth a thousand words!