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.
... under the age of 18, 6.1% from 18 to 24, 24.6% from 25 to 44, 28.2% from 45 to 64, and 20.7% who are 65 years of age or older. The median age is 44 years. For every 100 ...