ELF is also an acronym for the Endangered Language Fund[?], which serves as a focus group to help document and where possible record and preserve human languages threatened with extinction.
... from 45 to 64, and 19.9% who are 65 years of age or older. The median age is 43 years. For every 100 females there are 102.7 males. For every 100 females age 18 and ...