Figures are millions of euros (Mil. EUR) or month-to-month change (Mil. EUR M/M) not seasonally adjusted (NSA). The series start at January 2003 (outstandings) or February 2003 (transactions).
The series reside in the historical catalog (Ireland » Banking » Loans to households by purpose and maturity) and include, for example:
Because catalog locations are subject to change, the upper-right search box on DataBuffet.com provides a "find in catalog" mode that accepts a mnemonic.