Prior to its adoption of SFAS No.123(R), the Company recorded compensation expense for restricted stock awards on a straight-line basis over their vesting period.
If an employee forfeited the award prior to vesting, the Company reversed out the previously expensed amounts in the period of forfeiture.
As required upon adoption of SFAS No.123(R), the Company must base its accruals of compensation expense on the estimated number of awards for which the requisite service period is expected to be rendered.
Actual forfeitures are no longer recorded in the period of forfeiture.
In 2005, the Company recorded a pre-tax credit of $2.8 million in cumulative effect of accounting change, that represents the amount by which compensation expense would have been reduced in periods prior to adoption of SFAS No.123(R) for restricted stock awards outstanding on July 1, 2005 that are anticipated to be forfeited.
A summary of non-vested restricted stock award and restricted stock unit activity is presented below:
## Table 0 ##
As of December 31, 2007, there was $15.3 million of total unrecognized compensation cost related to non-vested awards.
This cost is expected to be recognized over a weighted-average period of 1.6 years.
The total fair value of restricted shares and restricted stock units vested was $11.0 million, $7.5 million and $4.1 million for the years ended December 31, 2007, 2006 and 2005, respectively.
Employee Stock Purchase Plan The shareholders of the Company previously approved the 2002 Employee Stock Purchase Plan (“2002 Purchase Plan”), and reserved 5,000,000 shares of common stock for sale to employees at a price no less than 85% of the lower of the fair market value of the common stock at the beginning of the one-year offering period or the end of each of the six-month purchase periods.
Under SFAS No.123(R), the 2002 Purchase Plan was considered compensatory.
Effective August 1, 2005, the Company changed the terms of its purchase plan to reduce the discount to 5% and discontinued the look-back provision.
As a result, the purchase plan was not compensatory beginning August 1, 2005.
For the year ended December 31, 2005, the Company recorded $0.4 million in compensation expense for its employee stock purchase plan for the period in which the 2002 Plan was considered compensatory until the terms were changed August 1, 2005.
At December 31, 2007, 757,123 shares were available for purchase under the 2002 Purchase Plan.401(k) Plan The Company has a 401(k) salary deferral program for eligible employees who have met certain service requirements.
The Company matches certain employee contributions; additional contributions to this plan are at the discretion of the Company.
Total contribution expense under this plan was $5.7 million, $5.7 million and $5.2 million for the years ended December 31, 2007, 2006 and 2005, respectively.
ITEM 6.
SELECTED CONSOLIDATED FINANCIAL DATA (Dollars in millions, shares in thousands, except per share and per trade amounts)
## Table 1 ##
* Percentage not meaningful.
(1) No cash dividends have been declared in any of the periods presented.
(3) Expenses are presented in parentheses.
(4) In 2005, we exited the professional proprietary and agency trading businesses and completed the sale of E*TRADE Consumer Finance Corporation (“Consumer Finance Corporation”).
In 2004, we completed the sale of substantially all of the assets and liabilities of E*TRADE Access, Inc.  (“E*TRADE Access”).
We have reflected the results of these operations as discontinued operations for all periods presented.
(5) In 2005, we recorded a credit of $1.6 million, net of tax, as a cumulative effect of accounting change, to reflect the amount by which compensation expense would have been reduced in periods prior to adoption of SFAS No.123(R) for restricted stock awards outstanding on July 1, 2005.
(6) For 2004, diluted earnings per share is calculated using the “if converted” method, which includes the additional dilutive impact assuming conversion of the Company’s subordinated convertible debt.
Under the “if converted” method, the per share numerator excludes the interest expense and related amortization of offering costs from the convertible debt, net of tax, of $20.0 million.
The denominator includes the shares issuable from the assumed conversion of the convertible debt of 25.8 million.
For all other periods presented, the “if converted” method is not used as its effect would be anti-dilutive.
(Dollars in millions):
## Table 2 ##
Compensation and Benefits Compensation and benefits increased 3% to $363 million for the year ended December 31, 2013 compared to 2012.
The increase resulted primarily from increased incentive compensation when compared to 2012.
Advertising and Market Development Advertising and market development expense decreased 22% to $108 million for the year ended December 31, 2013 compared to 2012.
The decrease in advertising and marketing were due largely to the planned decrease in advertising expenditures as part of our expense reduction initiatives.
Clearing and Servicing Clearing and servicing decreased 4% to $124 million for the year ended December 31, 2013 compared to 2012.
The decrease resulted primarily from lower servicing fees when compared to 2012 as the loan portfolio continues to run-off.
The decrease in servicing fees was offset by increased clearing fees as a result of an increase in DARTs, when compared to 2012.
FDIC Insurance Premiums FDIC insurance premiums decreased 12% to $104 million for the year ended December 31, 2013 compared to 2012.
The decrease for the year ended December 31, 2013 was primarily due to the continued improvement and quality of our balance sheet, improving capital ratios and overall risk profile when compared to 2012.
Impairment of Goodwill Impairment of goodwill was $142 million for the year ended December 31, 2013.
At the end of June 2013, we decided to exit the market making business, and as a result recorded $142 million in goodwill impairment, representing the entire carrying amount of goodwill allocated to this business.
Facility Restructuring and Other Exit Activities Facility restructuring and other exit activities was $28 million for the year ended December 31, 2013 compared to $8 million for the year ended 2012.
These costs were driven primarily by severance incurred as part of our planned expense reduction initiatives, in addition to costs incurred related to our decision to exit the market making business.
Other Income (Expense) Other income (expense) decreased 79% to $110 million for the year ended December 31, 2013 compared to 2012 as shown in the following table (dollars in millions):

<table><tr><td></td><td>Shares (in thousands)</td><td>Weighted- Average Grant Date Fair Value</td></tr><tr><td>Non-vested at December 31, 2006:</td><td>2,878</td><td>$13.01</td></tr><tr><td>Issued</td><td>830</td><td>$22.85</td></tr><tr><td>Released (vested)</td><td>-514</td><td>$15.93</td></tr><tr><td>Canceled</td><td>-1,197</td><td>$13.75</td></tr><tr><td>Non-vested at December 31, 2007:</td><td>1,997</td><td>$15.91</td></tr></table>
<table><tr><td></td><td colspan="5">Year Ended December 31,</td><td rowspan="2">Variance 2007 vs. 2006</td></tr><tr><td></td><td>2007</td><td>2006</td><td>2005</td><td>2004</td><td>2003</td></tr><tr><td> Results of Operations:<sup>-1(2)</sup></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Net operating interest income</td><td>$1,609.1</td><td>$1,400.0</td><td>$871.1</td><td>$635.1</td><td>$406.7</td><td>15%</td></tr><tr><td>Provision for loan losses<sup>-3</sup></td><td>$-640.1</td><td>$-45.0</td><td>$-54.0</td><td>$-38.1</td><td>$-38.5</td><td>1323%</td></tr><tr><td>Total net revenue</td><td>$-378.2</td><td>$2,420.3</td><td>$1,703.8</td><td>$1,482.9</td><td>$1,342.7</td><td>-116%</td></tr><tr><td>Gain (loss) on loans and securities, net</td><td>$-2,450.0</td><td>$56.0</td><td>$98.9</td><td>$140.7</td><td>$247.7</td><td>*</td></tr><tr><td>Net income (loss) from continuing operations<sup>(4)</sup></td><td>$-1,441.8</td><td>$626.8</td><td>$446.2</td><td>$381.8</td><td>$200.5</td><td>-330%</td></tr><tr><td>Cumulative effect of accounting changes<sup>-5</sup></td><td>$—</td><td>$—</td><td>$1.6</td><td>$—</td><td>$—</td><td>*</td></tr><tr><td>Net income (loss)</td><td>$-1,441.8</td><td>$628.9</td><td>$430.4</td><td>$380.5</td><td>$203.0</td><td>-329%</td></tr><tr><td>Basic earnings (loss) per share from continuing operations</td><td>$-3.40</td><td>$1.49</td><td>$1.20</td><td>$1.04</td><td>$0.56</td><td>-328%</td></tr><tr><td>Diluted earnings (loss) per share from continuing operations</td><td>$-3.40</td><td>$1.44</td><td>$1.16</td><td>$0.99</td><td>$0.55</td><td>-336%</td></tr><tr><td>Basic net earnings (loss) per share</td><td>$-3.40</td><td>$1.49</td><td>$1.16</td><td>$1.04</td><td>$0.57</td><td>-328%</td></tr><tr><td>Diluted net earnings (loss) per share</td><td>$-3.40</td><td>$1.44</td><td>$1.12</td><td>$0.99</td><td>$0.55</td><td>-336%</td></tr><tr><td>Weighted average shares—basic</td><td>424,439</td><td>421,127</td><td>371,468</td><td>366,586</td><td>358,320</td><td>1%</td></tr><tr><td>Weighted average shares—diluted<sup>-6</sup></td><td>424,439</td><td>436,357</td><td>384,630</td><td>405,389</td><td>367,361</td><td>-3%</td></tr></table>
<table><tr><td></td><td colspan="5"> December 31,</td><td rowspan="2">Variance 2007 vs. 2006</td></tr><tr><td></td><td> 2007</td><td> 2006</td><td> 2005</td><td> 2004</td><td> 2003</td></tr><tr><td> Financial Condition:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Available-for-sale mortgage-backed and investment securities</td><td>$11,255.0</td><td>$13,677.8</td><td>$12,564.7</td><td>$12,543.8</td><td>$9,826.9</td><td>-18%</td></tr><tr><td>Total loans, net</td><td>$30,139.4</td><td>$26,656.2</td><td>$19,512.3</td><td>$11,785.0</td><td>$9,131.4</td><td>13%</td></tr><tr><td>Margin receivables</td><td>$7,179.2</td><td>$6,828.4</td><td>$5,642.0</td><td>$1,965.5</td><td>N/A</td><td>5%</td></tr><tr><td>Total assets</td><td>$56,845.9</td><td>$53,739.3</td><td>$44,567.7</td><td>$31,032.6</td><td>$26,049.2</td><td>6%</td></tr><tr><td>Deposits</td><td>$25,884.8</td><td>$24,071.0</td><td>$15,948.0</td><td>$12,303.0</td><td>$12,514.5</td><td>8%</td></tr><tr><td>Corporate debt</td><td>$3,022.7</td><td>$1,842.2</td><td>$2,022.7</td><td>$585.6</td><td>$695.3</td><td>64%</td></tr><tr><td>Shareholders’ equity</td><td>$2,829.1</td><td>$4,196.4</td><td>$3,399.6</td><td>$2,228.2</td><td>$1,918.3</td><td>-33%</td></tr></table>

Question: what was the percentage change in total contribution expense under the plan between 2006 and 2007?