B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
80%
80% -- share of annual book sales for Icelandic book market (2025)
The Jolabokaflod tradition of purchasing and gifting books accounts for 80% of annual book sales in Iceland.
Attribution:
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Lighthouse Research Team
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Source verified
Evidence graded
Value
80%
Unit
Percentage
Data Vintage
2025
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Icelandic Publishers Association
Primary
Tier C
https://www.supadu.com/post/jolabokaflod-icelands-christmas-book-flood ↗
Source Article
Jólabókaflóð: Iceland’s Christmas Book Flood
Iceland is a book wormery, besides boasting a near 100% literacy rate, the nation leads the world in terms of writers, books published, and books read per person. Incredibly about 1 in 10 Icelanders will publish a book in their lifetime, and ⅓ of the Icelandic population reads books daily!
But what …
Original Research
Icelandic Publishers Association
· Original study ↗
Methodology
Secondary publication citing the Icelandic Christmas book flood tradition; no named original study provided
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Icelandic book market: 80% share of annual book sales. Source: Icelandic Publishers Association (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/jolabokaflod-share-annual-book-sales-iceland
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<blockquote cite="https://lighthousedata.io/data/jolabokaflod-share-annual-book-sales-iceland" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>80%</strong> -- share of annual book sales for Icelandic book market<br><small>Source: Icelandic Publishers Association (2025) · <a href="https://lighthousedata.io/data/jolabokaflod-share-annual-book-sales-iceland" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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