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| 5. | The Herfindahl-Hirschman Index (HHIWGI ) of the assessed raw material is calculated as follows: where: c denotes the countries supplying the assessed raw material; Sc is the share of country c in the supply (GS or EU_sourcing) of the assessed raw material; WGIc is an index based on the scaled World Bank Worldwide Governance Indicators of country c; tc is the trade parameter of a country adjusting the WGI, which shall be determined taking into account potential export taxes (possibly mitigated by a trade agreement in force), physical export quotas or export prohibitions imposed by a country c.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-13 · Text as adopted (Official Journal); later amendments are not incorporated in this text.