Hands up if you've got debts
In which case by Oxfam's definition you're possibly in the bottom 10% as you may negative wealth. If you don't have any debts you're richer than the bottom 40% combined. because Oxfam either don't understand net wealth or they're being disingenuous to get headlines.
http://heatst.com/life/oxfam-and-davos-do-gooders-are-talking-nonsense-about-inequality/