When each country joined – and where applicable left – each of twelve international groups. The dated counterpart to country_groups_tbl, which is a single current snapshot.
Format
A tibble with 176 rows:
- group
Group name.
- iso3c
ISO 3166-1 alpha-3 code.
- country
Country name.
- from
Date membership took effect.
- to
Date membership ended, or
NAfor a current member.
Details
A snapshot silently misstates any panel that spans an accession: an EU panel
over 2015-2020 either includes the United Kingdom throughout or excludes it
throughout, and both are wrong. country_groups() and in_group() read this
table when given as_of.
Scope, and what is deliberately absent
Twelve groups are dated: EU, EuroZone, NATO, OECD, ASEAN, EFTA, GCC,
Mercosur, Nordic, Visegrad, BRICS and G7. Commonwealth, G20 and OPEC are
not, and that is a decision rather than an omission – their histories
involve suspensions, readmissions and contested dates that would have to be
sourced case by case, and a fabricated date is worse than an absent one.
country_groups(as_of =) warns and falls back to the snapshot for those.
Dates are the treaty or accession date where one exists, otherwise 1 January of the accession year. The table is validated at build time against country_groups_tbl: the members current today must reproduce the snapshot exactly, for every group covered.
Examples
# EFTA is the instructive one: most of its founders left, for the EU
subset(country_groups_history, group == "EFTA")
#> # A tibble: 10 × 5
#> group iso3c country from to
#> <chr> <chr> <chr> <date> <date>
#> 1 EFTA AUT Austria 1960-05-03 1995-01-01
#> 2 EFTA CHE Switzerland 1960-05-03 NA
#> 3 EFTA DNK Denmark 1960-05-03 1973-01-01
#> 4 EFTA GBR United Kingdom 1960-05-03 1973-01-01
#> 5 EFTA NOR Norway 1960-05-03 NA
#> 6 EFTA PRT Portugal 1960-05-03 1986-01-01
#> 7 EFTA SWE Sweden 1960-05-03 1995-01-01
#> 8 EFTA FIN Finland 1961-06-27 1995-01-01
#> 9 EFTA ISL Iceland 1970-03-01 NA
#> 10 EFTA LIE Liechtenstein 1991-09-01 NA