each year

Từ điển WordNet v3.1 - WordNet Dictionary

adverb

1. without missing a year (Freq. 3)
- they travel to China annually
• Syn:
annually, yearly, every year
• Derived from adjective:
annual (for: annually)
2. by the year;
every year (usually with reference to a sum of money paid or received)
- he earned $100,000 per annum
- we issue six volumes per annum
• Syn:
per annum, p.a., per year, annually