A lot. In the U.S. debit is over 40% of transactions and growing.<p><a href="http:&#x2F;&#x2F;www.nilsonreport.com&#x2F;upload&#x2F;Nilson_Purch_Vol_2013.May.jpg" rel="nofollow">http:&#x2F;&#x2F;www.nilsonreport.com&#x2F;upload&#x2F;Nilson_Purch_Vol_2013.May...</a>