B1
happening once every year, or relating to a period of one year
Dictionary examples:
My dog's annual check-up always turns into a game of hide-and-seek. (0.0)
The school's annual talent show is where teachers discover their hidden juggling skills. (0.0)
The library's annual 'Loudest Reader' contest always ends in surprised silence. (0.0)
an annual event/visit/holiday (20.0)
annual income/salary (27.9)