The amendment to the Land Tax Act, relating to the article to permanently lower land value incremental tax,  went effective from February 1, 2005. In accordance with the lowered tax rates, Chunghwa recomputed its  land value incremental tax, and reclassified the reserve for land value incremental tax of NT$116 million to  stockholders’ equity - other adjustments. As of December 31, 2010, the unrealized revaluation increment was  decreased to NT$5,803 million by disposal of revaluation assets.  Depreciation expense on property, plant and equipment was NT$37,101 million, NT$35,114 million and  NT$32,737 million for the years ended December 31, 2008, 2009 and 2010, respectively. Interest expense  capitalized for the years ended December 31, 2008, 2009, and 2010 were NT$2 million, NT$1 million, and  NT$0.01 million, respectively. The capitalized interest rates were 2.268%-2.928%, 1.165%-1.604% and  1.1%, respectively, for the years ended December 31, 2008, 2009 and 2010.  Chunghwa reclassified the unused property, plant and equipment amounting to NT$61 million to idle assets  and recognized the impairment loss of NT$61 million on those assets for the year ended December 31, 2010.  Losses on property, plant and equipment arising from natural calamities such as earthquakes and typhoons  were recorded in non-operating expenses.  17. SHORT-TERM LOANS  18. SHORT-TERM BILLS PAYABLE  19. ACCRUED EXPENSES  20. OTHER CURRENT LIABILITIES  December 31 2009 2010 NT$ NT$ (In Millions) Unsecured loans - annual rate - 1.15%-1.23% and 1.10%-1.33% for 2009 and  2010, respectively $  275  $  115  Secured loans - annual rate - 0.81% for 2009 488  —  $  763  $  115  December 31,  2010 NT$ (In Millions) Commercial paper - annual rate 0.74%-0.79% $  230  December 31 2009 2010 NT$ NT$ (In Millions) Accrued salary and compensation $  9,876  $  10,716  Accrued employees’ bonuses and remuneration to directors  and supervisors 1,964  2,358  Accrued franchise fees 2,224  2,191  Other accrued expenses 3,385  3,139  $  17,449  $  18,404  December 31 2009 2010 NT$ NT$ (In Millions) Advances from subscribers $  6,908  $  9,220  Amounts collected in trust for others 2,225  2,356  Payables to contractors 2,229  1,262  Payables to equipment suppliers 1,533  1,106  Refundable customers’ deposits 1,045  1,097  Others 2,930  2,585  $  16,870  $  17,626  F-36