<prompt> Translate the following text to EnglishKuokoa ziada ya usalama wa kijamii hutokeza ziada ya bajeti ya umoja kwa miaka 20 kama inavyoonyeshwa katika mchoro wa 4.2, na kuondoa deni lililokuwa na umma kufikia mwaka 2015.  <response>: Saving the Social Security surpluses produces unified budget surpluses for almost 20 years, as shown in figure 4.2, and eliminates the debt held by the public by 2015. 