Corporations last year gave $890 million, and many executives serve on the organization's board.
The executive in a legal system serves as a government's centre of political authority.
A few years ago, a chief executive might have served on four or five boards.
It noted that under current law a former executive of the fund's adviser can serve as an independent director two years after retiring.
The chief executive, or any member of the Olympic committee's staff, could not serve on the board.
Looked at another way, half the chief executives in 1995 served more than six years, half less.
In the overwhelming majority of public companies, the chief executive also serves as the chairman of the board.
The chief executive could serve two consecutive five-year terms and then pick a successor.
Its executives serve on the supervisory boards of more than a dozen big corporations.
The executives would serve a single term and were subject to recall on the request of state governors.