Reports

Overview statistics across all peaks, expeditions, members, and references.

Total expeditions recorded by year.

Successful summit counts by year.

Top 5 most popular peaks each year by expedition count.

Growth of commercial expeditions over the decades.

Share of summits using supplemental oxygen, year by year.

How party sizes and hired-staff ratios have evolved.

How spring, autumn and winter shares have shifted decade by decade.

Distinct climbing nationalities present each year — the globalisation curve.

Total recorded deaths on each peak.

Recorded deaths across all peaks by year.

Peaks ranked by total deaths, death-to-summit ratio, and death-to-member ratio.

Breakdown of recorded deaths by cause (avalanche, fall, AMS, exposure...).

Summit and death rates per member, decade by decade.

Death rate per member by decade, comparing hired staff against expedition members.

Top 500 members ranked by number of expeditions.

Which countries produce the most Himalayan summiteers.

Hired members as a proportion of total, with death comparisons.

Participation and summit rates by sex over time.

Top 50 youngest and 50 oldest recorded summiters.

Climbers who have summited two or more peaks above 8000 metres.

Successful summiters by age bucket, plus median age over time.

Chronological list of first ascents of Himalayan peaks.

Side-by-side statistics for all peaks above 8000 metres.

Expeditions with disputed summit claims.

Successful summits by month — the spring and post-monsoon windows.

Why expeditions ended — successes, weather, accident, illness, time.

Route share by decade on Everest, Ama Dablam, Cho Oyu and Manaslu.