Browser users -v- browser users, data??

Anyone know where there might be data that shows what proportion of the web users use which browser? I think I recall reading that about 15% use mozilla, however I can't remember if that was a reliable source.

Bazz

http://www.w3schools.com/browsers/browsers_stats.asp

just rember a sites content/audience reflect the browsers.

e.g. if i had a wap site, wap phones will visit.

Like developer sites have people with the latest stuff. Where as age concern or sites directed at older people (65+) may have older browsers due to second hand/older computers.

scroots

Yes, but take Andrew's Left Justified as an example, the majority of people visiting it are using IE 6...

It's certainly true that the kind of site can determine the browser stats (ie a developer site may typically have a higher percentage of mozilla users), but 21% is pretty high considering IE is distributed with windows and a good percentage of people that get new computers consider IE "the internet". Granted, I haven't had internet access for over a year (Mozilla was around version 1.0). Have the release and promotion of firefox and moz 1.7 changed things that much or are those the w3c's own site statistics, reflective of the frequent visits from validation-and-specification-hungry moz-using developers?