First Data reported Thursday that its domestic merchant dollar volume processed grew 30% last year, from $252 billion to $328 billion. Total domestic transactions also soared from 4.5 billion to 5.8 billion. Merchant Processing Services posted 1999 pro forma consolidated revenues of $2.0 billion versus $1.8 billion for 1998, a 15% increase. At the end of 1999, FDC had 232.6 million domestic card accounts and 27.2 million international card accounts, on file. First Data also noted that it added 24,000 Internet merchants last year for a total of 72,000 online merchants. Dollar volume generated by identifiable Internet transactions grew 149% to $4.7 billion, while fourth quarter volume more than tripled. For complete 4Q and 1999 results for First Data please visit CardData ([www.carddata.com]).