^The total sum is 200% because each currency trade always involves a currency pair; one currency is sold (e.g. US$) and another bought (€). Therefore each trade is counted twice, once under the sold currency ($) and once under the bought currency (€). The percentages above are the percent of trades involving that currency regardless of whether it is bought or sold, e.g. the U.S. Dollar is bought or sold in 88% of all trades, whereas the Euro is bought or sold 32% of the time.
^"Currency". The Free Dictionary. currency [...] 1. Money in any form when in actual use as a medium of exchange, especially circulating paper money.
^"Regulation of Cryptocurrency Around the World". August 16, 2019. p. 1. One of the most common actions identified across the surveyed jurisdictions is government-issued notices about the pitfalls of investing in the cryptocurrency markets. [...] Many of the warnings issued by various countries also note the opportunities that cryptocurrencies create for illegal activities, such as money laundering and terrorism.