Forbes magazine in their July 18, 1994, pages 152-219, and July 15, 1996, pages 142-243 issues listed an index of the Billionaires around the world.
These articles implied that they are all-inclusive lists. However, it becomes clear that they are not complete lists when they excludes such prominent wealthy persons such as:
Her Royal Majesty Beatrix - Queen of the Netherlands (known as the wealthiest woman in the world)
Her Royal Majesty Margrethe II - Queen of Denmark
Her Royal Majesty Sofia - Queen of Spain
Sir Muda Hassanal Bolkiah Muizzadin
Waddaulah - The Sultan of Brunei, Darussalam
King Fahd - Monarch of Saudi Arabia
Emir Shaikh Jabir al-Ahmad al-Jabir as-Sabah - King of Kuwait
Sultan Qabus bin Said - King of Oman
Emir & Prime Minister Khalifah ibn Hamadath-Thani - King of Qatar
President Zaid ibn Sultan an-Nahayan - Ruler
of the United Arab Emirates
Haydar Abu Bakr-al Attas - Prime Minister of
Yemen
Amir isa bin Sulman al-Khalifa - King of Bahrain
The House of Rothschild,
The Wallenberg interests,
The Warburg interests,
The Schiff interests, or many others.
I am not the first, nor the last, to say that the "rich are getting richer", and the "middle-class and the poor are getting poorer" . However, I now have the absolute proof of this statement. The following chart very clearly proves that this well-known statement is indeed true.