text: Kepha ngo-1929, ngokusho kwesazi sezomlando uWilliam E. Leuchtenburg, imindeni eyizi-36,000 - engu-0.1% eyayisezingeni eliphezulu ngaleyo nkathi - yayihola imali eyayithi mayilingane neyemindeni esezingeni eliphansi eyizigidi eziyi-12, noma engu-42%.)