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24 Prepaid expenses, accruals and deferred income 31.12.2009 31.12.2010
  CHF thousands    
       
  Prepaid expenses and accrued income    
       
  Change in accrued income (accrual) 7,490 7,038
  Prepayment of energy and transport rights (prepayment) 70 4,296
  Other prepayments (accrual) 5,265 5,006
  Total 12,825 16,340

All accrued positions fall into the category “Loans and receivables”, are measured at amortised cost and are due within one year. The carrying amounts are assumed to be fair values.

  Deferred income and accrued expenses 31.12.2009 31.12.2010
       
  Accrued interest 3,625 4,600
  Accured annual leave and overtime 6,757 5,667
  Accrued other personnel expenses 2,650 6,235
  Accrued capital and other taxes, charges and levies 6,550 7,633
  Other prepayments 379 6,201
  Total 19,961 30,336

All positions are accruals and fall into the category “Other financial liabilities”. They are measured at amortised cost and are due within one year. The carrying amounts are assumed to be fair values.