{"pre_text": ["the weighted average grant date fair value of performance-based restricted stock units granted during the years 2008 and 2007 was $ 84.33 and $ 71.72 , respectively .", "the total fair value of performance-based restricted stock units vested during 2009 , 2008 and 2007 was $ 33712 , $ 49387 and $ 9181 , respectively .", "at september 30 , 2009 , the weighted average remaining vesting term of performance-based restricted stock units is 1.28 years .", "time-vested restricted stock units time-vested restricted stock units generally cliff vest three years after the date of grant , except for certain key executives of the company , including the executive officers , for which such units generally vest one year following the employee 2019s retirement .", "the related share-based compensation expense is recorded over the requisite service period , which is the vesting period or in the case of certain key executives is based on retirement eligibility .", "the fair value of all time-vested restricted stock units is based on the market value of the company 2019s stock on the date of grant .", "a summary of time-vested restricted stock units outstanding as of september 30 , 2009 , and changes during the year then ended is as follows : weighted average grant date fair value ."], "post_text": ["the weighted average grant date fair value of time-vested restricted stock units granted during the years 2008 and 2007 was $ 84.42 and $ 72.20 , respectively .", "the total fair value of time-vested restricted stock units vested during 2009 , 2008 and 2007 was $ 29535 , $ 26674 and $ 3392 , respectively .", "at september 30 , 2009 , the weighted average remaining vesting term of the time-vested restricted stock units is 1.71 years .", "the amount of unrecognized compensation expense for all non-vested share-based awards as of september 30 , 2009 , is approximately $ 97034 , which is expected to be recognized over a weighted-average remaining life of approximately 2.02 years .", "at september 30 , 2009 , 4295402 shares were authorized for future grants under the 2004 plan .", "the company has a policy of satisfying share-based payments through either open market purchases or shares held in treasury .", "at september 30 , 2009 , the company has sufficient shares held in treasury to satisfy these payments in 2010 .", "other stock plans the company has a stock award plan , which allows for grants of common shares to certain key employees .", "distribution of 25% ( 25 % ) or more of each award is deferred until after retirement or involuntary termination , upon which the deferred portion of the award is distributable in five equal annual installments .", "the balance of the award is distributable over five years from the grant date , subject to certain conditions .", "in february 2004 , this plan was terminated with respect to future grants upon the adoption of the 2004 plan .", "at september 30 , 2009 and 2008 , awards for 114197 and 161145 shares , respectively , were outstanding .", "becton , dickinson and company notes to consolidated financial statements 2014 ( continued ) ."], "table": [["", "stock units", "weighted average grant date fair value"], ["balance at october 1", "1570329", "$ 69.35"], ["granted", "618679", "62.96"], ["distributed", "-316839 ( 316839 )", "60.32"], ["forfeited or canceled", "-165211 ( 165211 )", "62.58"], ["balance at september 30", "1706958", "$ 69.36"], ["expected to vest at september 30", "1536262", "$ 69.36"]], "table_ori": [["", "Stock Units", "Weighted  Average Grant  Date Fair Value"], ["Balance at October 1", "1,570,329", "$69.35"], ["Granted", "618,679", "62.96"], ["Distributed", "(316,839)", "60.32"], ["Forfeited or canceled", "(165,211)", "62.58"], ["Balance at September 30", "1,706,958", "$69.36"], ["Expected to vest at September 30", "1,536,262", "$69.36"]]}

Question: what is the average of total fair value of time-vested restricted stock units vested during 2009 , 2008 and 2007?
Evidence:
text_8: the total fair value of time-vested restricted stock units vested during 2009 , 2008 and 2007 was $ 29535 , $ 26674 and $ 3392 , respectively .
Program: add(29535, 26674), add(#0, 3392), divide(#1, const_3)
Answer:
str_answer: 19867
exe_answer: 19867