On January 1, 2008, the company purchased a piece of equipment for $30,000. The equipment has a 5-year useful life and $0 residual value. The company uses straight-line depreciation for financial accounting purposes. Assume that the depreciation deduction for income tax purposes is as follows: 2008 = $10,000; 2009 = $8,000; 2010 = $6,000; 2011 = $4,000; and 2012 = $2,000. Assume that revenue in each year 2008–2012 is $20,000, that the revenue is the same for both tax and financial reporting purposes, and that the only expenses are depreciation and income taxes. The income tax rate is 40% in all years. Prepare the journal entry or entries to record income tax expense in each year 2008–2012.