yes there isnt one but many factors, usd has been going strong globally since Trump came, but in Pak, the rise is too much and too volatile,it will be stable by the end of first phase of amnesty scheme so that people bringing in money can benefit from it despite paying 4-6% tax as the currency has already been depreciated by 7%.
Secondly, its not just rupee depreciating. Its US dollar getting stronger and stronger because of China. US put more taxes on China and china is controlling dollar supply to keep it expensive. That way it will make Chinese good cheaper in US and has little impact on Chinese exports to US