Historical clue formulations

• Per ___ (yearly) — 2025-06-02
• Per ___ — 2024-09-18
• Per ___ (yearly) — 2023-10-09
• See 67-Across — 2021-03-14
• Per ___ — 2020-04-26
• See 15-Across — 2019-02-20
• Per ___ (yearly) — 2018-03-25
• 15-Across, e.g. — 2016-04-27
• Per ___ — 2014-02-16
• Per ___ — 2012-03-16
• Per ___ — 2010-05-26
• Per ___ (how budgets may be planned) — 2005-06-19
• Per ___ (yearly) — 2002-06-18
• Per ___ (yearly) — 2001-12-24