4. The development of productivity
Productivity is a measurement of efficiency which affects profitability.
Total factor productivity refers the amount of production to all factors of production (Land, Area, Capital...).
Partial factor productivity refers production to only one of the factors of production. Due to lack on proper data needed for computing total factor productivity, only partial productivities are computed.
Table (2) summarizes the descriptive statistics of this productiveness.
it is clear to notice the declining of the three partial productivities particularly from 1997 to 2010.