Held to maturity investments

(€ million) 31.12.2012 31.12.2011
Quoted bonds 7,512 5,269
Other held to maturity investments 27 24
Total 7,538 5,293

The Group limits the use of this category only to high rating quoted bonds, that Group companies are able to hold till maturity. The increase between December 2011 and December 2012 is mainly attributable to the classification in this category of part of investments performed using the liquidity provided on favorable terms by the European Central Bank to Group entities operating in the banking sector.

The fair value of the held to maturity investments amounted to € 8,062 million, of which € 8,035 million represented by quoted bonds.