However, I suppose most of those who enter training will never even enter space. It's a rock star earning model: very many try, very few succeed completely. But people do it also for other reasons than money.
But yeah, you don't enter the Astronaut core to get rich. :)
Then again, this is probably just supply and demand. Every kid growing up wants to be an astronaut, and very few get to.
[1] https://en.wikipedia.org/wiki/List_of_spaceflight-related_ac...
[1] fatalities in space: https://en.wikipedia.org/wiki/List_of_spaceflight-related_ac...
[2] number of spaceflights: https://en.wikipedia.org/wiki/List_of_human_spaceflights
[3] number of people who have been to space: http://www.worldspaceflight.com/bios/stats.php
[4] accelerated astronaut aging: http://lemire.me/blog/2015/12/01/the-mysterious-aging-of-ast...
[5] Apollo respiratory issues: https://en.wikipedia.org/wiki/Adverse_health_effects_from_lu...
18 "work"-related fatalities out of 546 "workers" represents a massive amount of risk over any widespread form of civilian employment. According to the Bureau of Labor Statistics, fishing is the riskiest job these days, with an annual fatality rate of around 12 per 10000.
Even granting that safety has improved with experience and better engineering, I think it's safe to say that being an astronaut is at least 10x more dangerous than the most dangerous civilian job.
On the other hand, for an accurate comparison to BLS numbers I think we would need the total number of astronauts, not the number of spaceflight participants. As for safety improvements, 3 of the 4 fatal spaceflight accidents (and 11 of 18 deaths) occurred in relatively new vehicles. Only one of the accidents occurred in a tried-and-true vehicle, and the fatality count is inflated by the number of people NASA put on each shuttle.
Conversely, there is much less of a risk of a fatal accident in a desk job - but long, stressful, hours combined with a bad diet and lack of exercise can massively increase the chance of dying early from heart disease or stroke.
At the height of the Iraq war, there was a suddenly increased demand for the services of private military contractors relative to their supply.
Now, the demand is reduced and the market rate for private military contractor services is much less expensive.
That E-5 is earning comparably to $65k or so, depending on the locality.