english: The first one is the Engels coefficient, which explains that the cost of daily necessities has dropped its percentage all through the past decade, in terms of family income, to about 37-some percent.
non_english: İlki, aile gelirlerindeki günlük ihtiyaç giderlerinin son on yılda %30 küsüre düştüğünü gösteren Engels katsayıları.