<page_title> The World's Billionaires </page_title> <section_title> Statistics </section_title> <table> <cell> 2005 <col_header> Year </col_header> </cell> <cell> 691 <col_header> Number of billionaires </col_header> </cell> <cell> $2.2 trillion <col_header> Group's combined net worth </col_header> </cell> </table>
The net worth of 2005's 691 billionaires is $2.2 trillion.