Dwindle (verb)

1. Gradually decrease in size, amount, or strength.
2. Become less and less.

Origin:

Late 16th century: probably a blend of dwinden and twindle, both used in middle english with the same meaning.

Examples:

1. The popularity of vinyl records has dwindled over the past few decades.
2. His strength dwindled as he walked.
3. The savings account balance had dwindled to next to nothing.
4. The company's profits have dwindled in recent years.
5. The company's workforce has dwindled to less than half its original size.