Central bank policy rates

The current policy rate of every jurisdiction Kresmion covers. One row is one central bank: the instrument it sets, the level, the observation date and its age in days, the direction and size in basis points of the last change, and the PRIMARY SOURCE of the number. rate_source is bis for the BIS WS_CBPOL observation, overlay where the bank's own published register supersedes a stalled BIS series, static for the UAE, which BIS publishes no policy rate for: the CBUAE Base Rate checked BY HAND against the bank's announcements, with no source link, source_label Maintained by hand, exempt from the max_age_days check below; checked_date is the day it was last checked, last_change_* the bank's own last move, and next_decision_date the next FOMC decision (the CBUAE moves its Base Rate with each one). Once that date passes without a new check the row is STALE: source_stalled true and stale_since = that date. The value is still served, so read stale_since before quoting it. Singapore is listed with no_policy_rate true and rate_pct null: the Monetary Authority of Singapore targets the exchange rate and sets no policy interest rate, and SORA (a market rate) is not served in its place. meta.with_policy_rate counts the rows that carry a rate; and (Phase 559.1) fred or probe where a licence-clean official source faster than BIS supersedes it. BIS publishes with a lag of several days, so between a decision and BIS catching up those two kinds carry the level in force and superseded_* carries what BIS still says. A rate whose source has not published for more than max_age_days is withheld (rate_pct null, withheld_stale true) rather than served stale, because a policy rate reads as current whatever its age. last_change.precision is day where the stored daily observations date the change and month where only the month-end history reaches it. The BIS must be cited as the source of its statistics.