1. (

• annually ,
• yearly ,
• every_year ,
• each_year

) without missing a year; "they travel to China annually" ;

2. (

• per_annum ,
• p.a. ,
• per_year ,
• each_year ,
• annually ,

) 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" ;