(7) Financial assets held to maturity

N67 FINANCIAL ASSETS HELD TO MATURITY
  FIGURES IN EUR MILLION
    Amortised cost Unrealised gains/losses Fair value
               
    31.12.2013 31.12.2012 31.12.2013 31.12.2012 31.12.2013 31.12.2012
  Government debt securities of EU member states 556 578 26 46 582 624
  US treasury notes 501 825 13 28 514 853
  Other foreign government debt securities 69 57 1 69 58
  Debt securities issued by quasi-governmental entities 1) 544 678 25 42 569 720
  Corporate securities 343 502 10 16 353 518
  Covered bonds/asset-backed securities 971 1,217 65 91 1,036 1,308
  Total 2,984 3,857 139 224 3,123 4,081
  1) Debt securities issued by quasi-governmental entities include securities of EUR 130 (167) million that are guaranteed by the Federal Republic of Germany, other EU states or German federal states
   

The book value of financial assets held to maturity is based on Purchase cost cost.

The item “Covered bonds, asset-backed securities” includes German covered bonds (Pfandbriefe) with a carrying amount of EUR 969  (1,213) million, which corresponds to 99 (99)%.

N68 CONTRACTUAL MATURITIES        
  FIGURES IN EUR MILLION
    Amortised cost Fair value
           
    31.12.2013 31.12.2012 31.12.2013 31.12.2012
  One year or sooner 647 869 654 874
  Later than one year, up to two years 1,160 660 1,213 683
  Later than two years, up to three years 549 1,136 582 1,219
  Later than three years, up to four years 158 545 167 592
  Later than four years, up to five years 152 167 158 179
  Later than five years, up to ten years 301 450 331 498
  Later than ten years 17 30 18 36
  Total 2,984 3,857 3,123 4,081
   
N69 RATING STRUCTURE OF FINANCIAL ASSETS HELD TO MATURITY
  FIGURES IN EUR MILLION
    Amortised cost
       
    31.12.2013 31.12.2012
  AAA 897 1,178
  AA 1,258 1,648
  A 540 709
  BBB or lower 272 320
  No rating 17 2
  Total 2,984 3,857
   

The rating categories are based on the classifications of leading international rating agencies.