There are 220bn lines of COBOL code in use today (1.5bn new lines/year). COBOL is the foundation of 43% of all banking systems. Such systems handle $3 trillion of daily commerce. COBOL handles 95% of all ATM card-swipes, 80% of all in-person credit card transactions.

https://files.mastodon.social/media_attachments/files/111/517/987/231/521/706/original/ab59ae646d32820e.png