1971
Gold window closes
15 August: the Nixon shock suspends dollar–gold convertibility for foreign officials.

On 15 August 1971 — the Nixon shock — the United States stopped converting dollars into gold for foreign official holders. That closed the last official gold window on the postwar dollar.
Private Americans had already been barred from monetary gold since the 1933 recall. Official dollar claims had outgrown the U.S. gold stock at $35 an ounce; that Sunday ended the remaining convertibility link.