John Kluge will write more about this metric in his upcoming post here at Forbes.

FORBES: This New Year: Transform Your Thinking

The list of 2010 decedents includes six billionaires: John Kluge, Walter Shorenstein, Paul Milstein, Dan Duncan, George Steinbrenner, and Mary Janet Cargill.

FORBES: Pssst. Don't Tell The IRS. It's Spring And The Estate Tax Has Been Reinstated

John Kluge, meanwhile, made news in Palm Beach in 1995 again.

FORBES: John Kluge's colorful life marked Palm Beach lore

Amid all the media appearances, The Donald has found time to bail out long-time friend Patricia Kluge, the financially distressed ex-wife of late media billionaire John Kluge.

FORBES: Trump Buys Kluge Winery--But He's Not The Only One

John Kluge passed away this summer.

FORBES