Meanwhile, medical and healthcare spending is rising, putting government finances under additional strain.” (Robin Miranda and Kurt E. Reiman) Bibliography -  The impact of ageing on public expenditure: projections for the EU25 Member States on pensions, health care, long-term care, education and unemployment transfers (2004-2050): Report prepared by the Economic Policy Committee and the European Commission (DG ECFIN)  -  Pensions at a Glance – Public policies across OECD countries: OECD 2007  -  Annual Report 2006: Banque centrale du Luxembourg  -  The transition from PAYG to funding: Application to the Luxembourg private sector pension system: Working paper n° 23 July 2006 by Muriel Bouchet - Banque centrale du Luxembourg  -  Essentials 2008: UBS – Transition to Retirement by Robin Miranda and Kurt E. Reiman  -  Franco Modigliani and Arun S. Muralidhar, Rethinking Pension Reform, Cambridge University Press, 2004.
And if such signs are sensed, even if they are only trivial, we should not just dismiss them but must investigate their causes and respond to them thoroughly. Fellow members of the Bank of Korea!