Twenty-one Americans gave at least $100-million to charitable causes last year, breaking a new record in philanthropic giving, according to The Chronicle's annual ranking of the 60 most-generous Americans. In 2005, 11 people gave that much.

Top Ten Donors

1 Warren E. Buffett : Pledged: $43.5-billion Total Paid $1.9-billion
2 Herbert M. and Marion O. Sandler : $1.3-billion $1.3-billion
3 Bernard A. and Barbro Osher : $723.2-million $723.2-million
4 Jim Joseph : $500-million (bequest) $500-million
5 Hector Guy and Doris Di Stefano : $264-million (bequest) $264-million
6 David Rockefeller : $252-million $9.5-million
7 Mary Joan Palevsky : $212.8-million (bequest) $212.8-million
8 T. Boone Pickens : $171.5-million $171.5-million
9 Michael R. Bloomberg : $165-million $165-million
10 Lorry I. Lokey : $163-million $163-million