The data of commercial farms for castles are collected through a comprehensive field survey carried out on an annual basis, where data are collected on the quantities and values of production in these farms and production requirements as well as the characteristics of farms and agricultural labor. Commercial farms include all farms specialized in the production of one or more types of livestock, and tools for animal husbandry, and obtain a formal license to practice this activity. In addition, the table illustrate the data collected from 2010 until 2015.
