“[T]he money arising from corn rents is, communibus annis, almost double to the rents reserved in money.” 2 William Blackstone, Commentaries on the Laws of England 322 (1766).
communibus annis
communibus annis (k[schwa]-myoo-ni-b[schwa]s an-is). [Latin] Hist. On the average of years; on the annual average.