- country
One uppercase, three-letter country ISO code (required).
- povline
One finite, non-negative numeric poverty line, or NULL.
With ppp_version = 2011, NULL sends 1.9; otherwise the API applies
its default poverty line.
- version
Data version in YYYYMMDD_PPP_XX_YY_IDENTITY format, or
NULL. See get_versions().
- ppp_version
One integer-valued numeric PPP year, a four-digit year
string, or NULL.
- release_version
A valid publication date in YYYYMMDD format, or
NULL.
- api_version
API version. Currently only "v1" is supported.
- simplify
One non-missing logical value. If TRUE (the default),
return simplified data.
- server
One non-empty server name, or NULL for the production server.
For World Bank internal use only.