General purpose and private label credit, debit, and prepaid cards issued in the United States generated $6.962 trillion in payments for goods and services in 2018, an increase of 10.0% over 2017. To accept those payments, merchants paid $107.78 billion in processing fees, an increase of $11.52 billion, or 12.0%, over the prior year. General purpose Visa, Mastercard, Discover, and American Express credit cards and private label store, gasoline, medical, etc. credit cards combined to generate $3.930 trillion in purchase volume, up 9.3%. Credit cards accounted for 56.46% of combined credit...