Table 1. Temporal trends in demographic makeup of mountaineers.

	Women		All climbers
Time period	Mean N per year	Percentage women	Total N per year	N age ≥40 years	Percentage age ≥ 40	N age ≥60 years	Percentage age ≥ 60
1953–1989	2.5	4.5	2012	9.8	18.0	0.1	0.1
1990–2005	24.8	9.1	4332	104.9	38.7	6.1	2.2
2006–2019	52.7	14.6	5401	194.7	54.1	16.7	4.6