What is the reason behind the increase in Dollar rate in Pakistan and how it is effecting the economy of Pakistan

Today the dollar in Pakistan reached 137 PKR in open market. An increase of almost 12.75/- PKR.
From past year and a half dollar rate is contineously increasing and effecting the economy of Pakistan. What is the reason behing this. This is realy effecting the lives of common people in Pakistan and need to be fixed and stable. 

abdul Pakistan Economy 10/9/2018 1:15:11 PM 120 Times