The government collects the required and detailed information about this matter within a specific scheme and announces the results to the public by combining and summarizing these important data. These announced results include highly detailed information and show the conclusion of economic activities occurred in that country and in that period. For instance, the public institution authorized for this task in Turkey is Turkish Statistical Institute (TUIK). TUIK was announcing these data annually at the end of the year until 1987. Since 1987, it has been announcing four times a year by measuring in a three months (quarterly) basis.