Ratio of US wealth to population: 83% to Richest 10% and 17% for 90% - Revolting?

According to the most recent data in the World Bank's database, the amount of the nation's wealth held by the richest 10 percent of the population:

Chile     41.7%

Ecuador  43.3% 

Bolivia    45.3% 

"the envelope, please..."

                  U. S.     83% *

You read that right:  once the richest 10% take their share of 83% of the nation's wealth, there's just 17% left for the rest of us, 90%.

 * http://sociology.ucsc.edu/whorulesamerica/power/wealth.html