Yearly. Bloomberg Financial Dictionary
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for or in each year; =per year:
• The economy grew at an average rate of 6% per annum.
• a salary of $30,000 pa
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per annum UK US adverb (WRITTEN ABBREVIATION pa, p.a.)
► used to refer to an amount that is produced, sold, spent, etc. each year: »
The country exports goods worth $600 million per annum.
Financial and business terms. 2012.