[["", "december 27 2008", "december 29 2007"], ["balance at beginning of year", "$ 126.6", "$ 70.5"], ["additions based on tax positions related to prior years", "14.2", "10.0"], ["reductions based on tax positions related to prior years", "-4.6 ( 4.6 )", "-8.0 ( 8.0 )"], ["additions based on tax positions related to current period", "83.8", "73.0"], ["reductions based on tax positions related to current period", "-", "-"], ["reductions related to settelements with tax authorities", "-", "-7.6 ( 7