Export Concentration Index

Every year in one file, one row per country per year: export-concentration-all-editions-nations-inquiry.csv

Every column in the newest file of Export Concentration Index: what it holds, how it is stored, and its range.

Column	What it holds	Stored as	Range, 2025	Distinct	Empty	Spread
CountrycountryName	The country’s name, as this file spells it.	Text	—	213	0
ISO Codecountry_codeIdentifier	The ISO 3166-1 alpha-3 code, added by this site. Every table here joins on it.	Text · 3 letters	—	213	0
Export concentration index (0–1)export_concentrationHeadline	The headline figure: Export concentration index (0–1, normalised Herfindahl–Hirschman).	Number · up to 6 decimals	0.05881Poland0.93345Sint Maartenmiddle 0.30604	213	0
Export diversification index (0–1)export_diversificationMeasure	UNCTAD's diversification index: how far the country's export mix differs from the world's, from 0 (the same as the world's) to 1 (entirely different).	Number · up to 6 decimals	0.23946United States0.93635New Caledoniamiddle 0.71563	212	0
Products exported (SITC 3-digit groups)products_exportedMeasure	The number of product groups (SITC Rev. 3, three digits) the country exported during the year.	Number · whole numbers	92 share it259United Statesmiddle 185	130	0
UNCTAD footnotefootnoteLabel	UNCTAD's note on the reading, where there is one; "Estimated" marks an UNCTAD estimate rather than trade the country reported, and a note on unclassified trade marks a reading whose product split is uncertain.	Text	—	2	94

Profiled from the newest file. Range: the lowest and highest value, with the country holding it when only one does. Spread: countries in ten equal steps from lowest to highest. Neither end is better. The values describe a shape, not a score.

The newest 12 of 31 years.

Not in this dataset · 12 places this site covers

UNCTAD gives no figure for these in any year held here. It is the publisher’s choice of scope, and each place’s profile shows what is measured.

Channel IslandsIsle of ManKosovoLiechtensteinMonacoNorthern CyprusPuerto RicoSaint MartinSan MarinoSomalilandUnited States Virgin IslandsVatican City

1. 1 · Publisher

   UN Trade and Development (UNCTAD)

   unctadstat.unctad.org

2. 2 · Their file

   Export Concentration Index 2025

   US_ConcentDiversIndices

3. 3 · Read by this site

   September 29, 2026

   Imported by a script that parses each figure and writes it down unrounded.

4. 4 · Stored as

   31 files, one per year

   Each downloads as a CSV, or every year together as export-concentration-all-editions-nations-inquiry.csv

5. 5 · Used on

   Its statistic page, and every profile it measures

   /statistics/export-concentration

Read from UNCTAD's own US.ConcentDiversIndices bulk file on UNCTADstat, calculated by UNCTAD from its merchandise trade matrix. UNCTAD's diversification index and the number of product groups exported are kept beside it, and UNCTAD's "Estimated" footnote travels with every reading it estimated.

• Charted

  Export Concentration Index by country

  Who is highest, the map, the spread, who rose and fell, and the records.

• Subjects

  • Economy & Innovation
  • Mobility & Trade

• Near neighbours

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