fput: Fraction Of Population Urban Table
Constant
Population sector
Fraction Of Population Urban Table [Dmnl]
fput = [0, 0.2, 0.4, 0.5, 0.58, 0.65, 0.72, 0.78, 0.80]

fput in the updating graph: ( how to read )
In nodes
Out nodes
fpu : fraction of population urban