Here's the US distribution of wealth in 2001:

Top 1% Next 9% Bottom 90%

2001 33.4% 51.0% 15.5%


Global:

"most comprehensive study of personal wealth ever undertaken" reveals such facts as that, at the turn of the century, the top 2% of the world's population owned more than half of all global personal wealth. Within that "the richest 1% of adults alone owned 40% of global assets in the year 2000, and that the richest 10% of adults accounted for 85% of the world total."