Generation X is a term used to describe generations in many countries
around the world born during the 1960s and 1970s, more or less. The exact
demographic boundaries of Generation X are not well defined, depending on
who is using the term, where and when. The term is used in demography, the
social sciences, and marketing, though it is most often used in popular
culture.
Some of the defining factors used in descriptions of Generation X stem
from social transitions resulting from the decline of colonial imperialism
to the fall of the Berlin Wall and the end of the Cold War. Another more
prevalent factor is a bell curve bottoming out in American births from
1960 through 1980http://www.infoplease.com/ipa/A0005067.html, after the
American baby boom from 1946 to 1964. A small, often "invisible
generation" in the wake of the socially-reconstructing baby boomers, those
born in the U.S. between 1964 (often cited as 1961: see Coupland and Straus
Generation X,