Please review the following interactive currency chart over the last 10 years.
Answer the following questions:
There are mainly two troughs and one peak. Please find the dates of peak and troughs. What are the reasons for the peak and the trough between 2016 and 2017? In other words, what caused the sharp depreciation for British Pound during 2010 and depreciation after 2016? If you have $10,000 and would like to convert to pounds, how much can you get on April 25th, 2019? Your answers are limited to no more than ten sentences.