5 20 , बेयो लुनायनि थाखाय फोजोबजानो 15 बोसोरफ्राम लायो आरो 20 , सुबुंफोरा खामानिखौ मावनो थिसनजादोंमोन ।
It took 15 years for the construction to be completed and around 20 000 people were employed to do the work .