Generation Y

In its January 22, 2008 edition, the Quebec City newspaper, Le Soleil, had a topic about generations by age group. Generations are grouped as follows: - The Silent generation, people born before 1945. - The Baby Boomers, people born between 1945 and 1961. - Generation X, people born between 1962 and 1976. - Generation Y, people born between 1977 and 1989. Why do we call the last one generation Y? I did not know, but a caricaturist explains it eloquently ... I learned something new.