A record 1,210 billionaires made the 2011 list, representing a combined wealth of $4.5 trillion, up from $3.6 trillion the previous year.
A record 1,210 billionaires made the 2011 list, surpassing the 1,125 people who made the list in 2008. Their combined wealth was $4.5 trillion, up from $3.6 trillion the previous year.