 
<translate> Tambaya. Halin da ake ciki: Alaska Permanent Fund Corporation tana sarrafa dukiyar duka Asusun na dindindin da sauran saka hannun jari na jihar, amma kashe kudaden Asusun ya rage ga Majalisar Dokoki. Kamfanin ya kamata ya gudanar da mafi yawan riba mai hankali, kuma ba - kamar yadda wasu Alaskans da farko suke so ba - a matsayin bankin ci gaba don ayyukan cikin-jihar. Asusun ya karu daga saka hannun jari na farko na dala 734,000 a 1977 zuwa kusan dala biliyan 53.7 a ranar 9 ga Yuli, 2015. Wasu ci gaban ya kasance saboda kyakkyawan gudanarwa, wasu don sake saka hannun jari na hauhawar farashi, wasu kuma ta hanyar yanke shawara na doka don saka ƙarin kuɗaɗen shiga a cikin shekarun bunƙasa. Kowace shekara, asusun da aka samu na asusun an raba shi tsakanin tabbatar da hauhawar farashi, farashin aiki, da kuma shekara-shekara na Asusun Kasuwanci.  Tambaya: daga ina ne rabon kudade na dindindin ya fito? Amsa. asusun da aka samu Wane bayani ne ya nuna cewa hakan gaskiya ne? <eng> Question. Context: The Alaska Permanent Fund Corporation manages the assets of both the Permanent Fund and other state investments, but spending Fund income is up to the Legislature. The Corporation is to manage for maximum prudent return, and not -- as some Alaskans at first wanted -- as a development bank for in-state projects. The Fund grew from an initial investment of $734,000 in 1977 to approximately $53.7 billion as of July 9, 2015. Some growth was due to good management, some to inflationary re-investment, and some via legislative decisions to deposit extra income during boom years. Each year, the fund's realized earnings are split between inflation-proofing, operating expenses, and the annual Permanent Fund Dividend.

Question: where does the permanent fund dividend come from?
Answer. the fund 's realized earnings
What step-by-step reasoning justifies that answer? 