A dated, approximate reference table of exchange rates used by
convert_currency() / add_currency() when no custom rates are supplied.
Rates are expressed as units of the currency per 1 US dollar (base USD).
These are a convenience snapshot, not live rates – pass your own rates
to the conversion helpers when accuracy matters.
Format
A tibble with one row per currency and columns:
- currency
ISO 4217 code (e.g.
"EUR").- name
Currency name.
- per_usd
Units of the currency per 1 US dollar.
The snapshot date is stored in attr(currency_rates, "snapshot_date").
