Meaning of the word "per annum" in English

What does "per annum" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

per annum

US /pər ˈænəm/
UK /pər ˈænəm/

Adverb

for each year; annually

Example:
The interest rate is 5% per annum.
His salary increased by $2,000 per annum.