<prompt> Translate the following text to SwahiliTo analyze the effect of fiscal policy on saving and growth, we modified the original model to include a set of relationships that describe the federal budget and its links to the economy, using the framework of the National Income and Product Accounts NIPA.  <response>: Ili kuchambua athari za sera za kifedha kwenye akiba na ukuaji, tulibadilisha mfano wa awali ili kujumuisha seti ya mahusiano ambayo yanaelezea bajeti ya shirikisho na uhusiano wake na uchumi, kwa kutumia mfumo wa Akaunti za Taifa za Mapato na Bidhaa NIPA. 