How is the projected size number larger than the numbers born?

When I tell people I'm part of the silent generation, almost every one of them say you've never been silent.

I think all of these generational designations are ridiculous, especially the so-called “silent generation.” Whoever coined that term didn’t know jack about history.

A lot of people call me a boomer and they mean it as an insult. Technically I'm a Generation Jones, but they include it in "boomers" It's no better than picking on the millennials.
By the numbers
Baby Boomers: born 1946 to 1964. ...
Generation Jones: born 1955 to 1965. ...
Generation X: born 1965 to 1980. ...
Xennials: born 1977 to 1983. ...
Millennials: born 1981 to 1996. ...
Generation Z: born 1997 or after. ...
Generation Alpha: born 2010 or after.