In its issue out today, it estimated her worth at $623 million.

Forbes magazine estimates his total worth at more than $1.5 billion.

The paper went on to estimate his worth at more than $5 billion.

In 2008, Forbes estimated the family's net worth at $36 billion.

Financial World just estimated his net worth at a minimum of $12 million.

Business Week estimated the family's net worth in 2000 to be more than $1 billion.

Two years ago Christie's estimated its worth at $305 million.

He estimates his current net worth at "around $1 million."

By the late 1980s, each man estimated his net worth at over $100 million.

Forbes estimated his father's net worth at some $300 million a few years back.