due to the adoption of sfas no .123r , the company recognizes excess tax benefits associated with share-based compensation to stockholders 2019 equity only when realized .when assessing whether excess tax benefits relating to share-based compensation have been realized , the company follows the with-and-without approach excluding any indirect effects of the excess tax deductions .under this approach , excess tax benefits related to share-based compensation are not deemed to be realized until after the utilization of all other tax benefits available to the company .during 2008 , the company realized $ 18.5 million of such excess tax benefits , and accordingly recorded a corresponding credit to additional paid in capital .as of december 28 , 2008 , the company has $ 36.5 million of unrealized excess tax benefits associated with share-based compensation .these tax benefits will be accounted for as a credit to additional paid-in capital , if and when realized , rather than a reduction of the tax provision .the company 2019s manufacturing operations in singapore operate under various tax holidays and incentives that begin to expire in 2018 .for the year ended december 28 , 2008 , these tax holidays and incentives resulted in an approximate $ 1.9 million decrease to the tax provision and an increase to net income per diluted share of $ 0.01 .residual u.s .income taxes have not been provided on $ 14.7 million of undistributed earnings of foreign subsidiaries as of december 28 , 2008 , since the earnings are considered to be indefinitely invested in the operations of such subsidiaries .effective january 1 , 2007 , the company adopted fin no .48 , accounting for uncertainty in income taxes 2014 an interpretation of fasb statement no .109 , which clarifies the accounting for uncertainty in tax positions .fin no .48 requires recognition of the impact of a tax position in the company 2019s financial statements only if that position is more likely than not of being sustained upon examination by taxing authorities , based on the technical merits of the position .the adoption of fin no .48 did not result in an adjustment to the company 2019s opening stockholders 2019 equity since there was no cumulative effect from the change in accounting principle .the following table summarizes the gross amount of the company 2019s uncertain tax positions ( in thousands ) : .
[['balance at december 31 2007', '$ 21376'], ['increases related to current year tax positions', '2402'], ['balance at december 28 2008', '$ 23778']]
as of december 28 , 2008 , $ 7.7 million of the company 2019s uncertain tax positions would reduce the company 2019s annual effective tax rate , if recognized .the company does not expect its uncertain tax positions to change significantly over the next 12 months .any interest and penalties related to uncertain tax positions will be reflected in income tax expense .as of december 28 , 2008 , no interest or penalties have been accrued related to the company 2019s uncertain tax positions .tax years 1992 to 2008 remain subject to future examination by the major tax jurisdictions in which the company is subject to tax .13 .employee benefit plans retirement plan the company has a 401 ( k ) savings plan covering substantially all of its employees .company contributions to the plan are discretionary .during the years ended december 28 , 2008 , december 30 , 2007 and december 31 , 2006 , the company made matching contributions of $ 2.6 million , $ 1.4 million and $ 0.4 million , respectively .illumina , inc .notes to consolidated financial statements 2014 ( continued ) .

Question: what was the change in millions of company contributions to the employee benefit plans retirement plan between 2007 and 2008?
Answer: 1.2