13.
Restricted Stock Awards Gallagher has adopted a restricted stock plan for its directors, officers and certain other employees.
Under the provisions of the plan, Gallagher is authorized to issue 4.0 million restricted shares or related stock units of Gallagher common stock.
The Compensation Committee is responsible for the administration of the plan.
Each award granted under the plan represents a right of the holder of the award to receive shares of Gallagher common stock, cash or a combination of shares and cash, subject to the holder’s continued employment with Gallagher for a period of time after the date the award is granted.
The Compensation Committee determines each recipient of an award under the plan, the number of shares of common stock subject to such award and the period of continued employment required for the vesting of such award.
At December 31, 2008, 2.5 million restricted shares were available for grant under this plan.
In 2008, 2007 and 2006, Gallagher granted 285,000, 258,000 and 229,000 shares, respectively, of its common stock to employees related to incentive compensation plans, with an aggregate fair value of $6.9 million, $7.4 million and $6.3 million, respectively, at the date of grant.
The 2008, 2007 and 2006 restricted stock awards (restricted shares or related stock units) generally vest annually on a pro rata basis however, 176,000 shares granted in first quarter 2008 and 116,000 shares granted in second quarter 2007 vest in full based on continued employment through March 5, 2012 and May 15, 2011, respectively.
The vesting periods of the 2008, 2007 and 2006 restricted stock awards are as follows (in actual shares):
## Table 0 ##
Gallagher accounts for restricted stock at historical cost, which equals its fair market value at the date of grant.
When restricted shares are issued, an unearned restricted stock obligation is recorded as a reduction of capital in excess of par value in the accompanying consolidated balance sheet and is amortized to compensation expense ratably over the vesting period of the participants.
Prior to June 30, 2006, the restricted stock awards granted by Gallagher typically contained provisions where participants will continue to vest in the awards through the vesting dates if they leave Gallagher and have met the retirement eligible age requirement.
Thus, the recognition of stock compensation expense related to restricted stock awards will not follow the vesting schedules presented above.
Future changes in the fair value of the Gallagher common stock that is owed to the participants do not have any impact on Gallagher’s consolidated financial statements.
During 2008, 2007 and 2006, $4.4 million, $4.4 million and $6.0 million, respectively, was charged to compensation expense related to restricted stock awards granted in 2004 through 2008.
At December 31, 2008 and 2007, $5.2 million (related to 329,000 shares) and $5.6 million (related to 346,000 shares), respectively, of unearned restricted stock outstanding was recorded as an offset to capital in excess of par value in the accompanying consolidated balance sheet.
The total intrinsic value of unvested restricted stock at December 31, 2008 and 2007 was $15.6 million and $11.1 million, respectively.
On May 15, 2007, pursuant to a Performance Unit Program, the Compensation Committee approved the future grant of provisional cash awards of $13.5 million in the aggregate to officers and key employees of Gallagher that are denominated in units (470,000 units in the aggregate), each of which is equivalent to the value of one share of Gallagher’s common stock on the approval date of grant.
The Performance Unit Program consisted of a one-year performance period based on financial performance and a two-year vesting period.
At the discretion of the Compensation Committee and determined based on company performance, the officer or key employee was granted a percentage of the provisional cash award units that equates to the EBITA (as defined in the Program) growth achieved.
At the end of the performance period (December 31, 2007 for the 2007 awards), eligible employees were granted an amount of units based on achievement of the performance goal and subject to approval by the Compensation Committee.
Granted units fully vest based on continuous employment through January 1, 2010.
The ultimate award value will be equal to the trailing twelve month stock price on December 31, 2009, multiplied by the number of units subject to the award, but limited to between 0.5 and 1.5 times the original value of the units determined as of the grant date.
The fair value of the grant will be paid out in cash as soon as practicable in 2010.
If an eligible employee leaves Gallagher prior to the vesting date, the entire award will be forfeited.
Based on company performance for 2007, Gallagher granted 230,000 units under the Performance Unit Program in first quarter 2008 that will fully vest on January 1, 2010.
During 2008, $2.7 million was charged to compensation expense related to this grant.
awards with an aggregate fair value of $6.4 million, $8.4 million and $7.6 million, respectively, were vested and distributed to executives under the DEPP.
We have a Deferred Cash Participation Plan (which we refer to as the DCPP), which is a non-qualified deferred compensation plan for certain key employees, other than executive officers, that generally provides for vesting and/or distributions no sooner than five years from the date of awards.
Under the provisions of the DCPP, we typically contribute cash in an amount approved by the compensation committee to the rabbi trust on behalf of the executives participating in the DCPP, and instruct the trustee to acquire a specified number of shares of our common stock on the open market or in privately negotiated transactions based on participant elections.
In the first quarter of each of 2018, 2017 and 2016, the compensation committee approved $5.6 million, $5.1 million and $3.1 million, respectively, of awards in the aggregate to certain key executives under the DCPP that were contributed to the rabbi trust in second quarter 2018, 2017 and 2016, respectively.
During 2018, 2017 and 2016 we charged $3.0 million, $2.5 million and $1.5 million to compensation expense related to these awards.
There was $3.6 million of distributions from the DCPP during 2018.
There were no distributions from the DCPP during 2017 and 2016.12.
Restricted Stock, Performance Share and Cash Awards Restricted Stock Awards As discussed in Note 10 to these consolidated financial statements, on May 16, 2017, our stockholders approved the LTIP, which replaced our previous stockholder-approved 2014 LTIP.
The LTIP provides for the grant of a stock award either as restricted stock or as restricted stock units to officers, employees and non-employee directors.
In either case, the compensation committee may determine that the award will be subject to the attainment of performance measures over an established performance period.
Stock awards and the related dividend equivalents are non-transferable and subject to forfeiture if the holder does not remain continuously employed with us during the applicable restriction period or, in the case of a performance-based award, if applicable performance measures are not attained.
The compensation committee will determine all of the terms relating to the satisfaction of performance measures and the termination of a restriction period, or the forfeiture and cancellation of a restricted stock award upon a termination of employment, whether by reason of disability, retirement, death or any other reason.
The agreements awarding restricted stock units under the LTIP will specify whether such awards may be settled in shares of our common stock, cash or a combination of shares and cash and whether the holder will be entitled to receive dividend equivalents, on a current or deferred basis, with respect to such award.
Prior to the settlement of a restricted stock unit, the holder of a restricted stock unit will have no rights as a stockholder of the company.
The maximum number of shares available under the LTIP for restricted stock, restricted stock units and performance unit awards settled with stock (i. e. , all awards other than stock options and stock appreciation rights) is 4.0 million.
At December 31, 2018, 3.3 million shares were available for grant under the LTIP for such awards.
In 2018, 2017 and 2016, we granted 439,100, 476,350 and 479,167 restricted stock units, respectively, to employees under the LTIP and 2014 LTIP, with an aggregate fair value of $28.7 million, $26.8 million and $20.4 million, respectively, at the date of grant.
The 2018, 2017 and 2016 restricted stock units vest as follows: 420,200 units granted in first quarter 2018, 477,500 units granted in first quarter 2017 and 466,600 units granted in first quarter 2016, vest in full based on continued employment through March 15, 2023, March 19, 2022 and March 17, 2021, respectively, while the other 2018, 2017 and 2016 restricted stock unit awards generally vest in full based on continued employment through the vesting period on the anniversary date of the grant.
For certain of our executive officers age 55 or older, restricted stock units awarded in 2018, 2017 and 2016 are not subject to forfeiture upon such officers’ departure from the company after two years from the date of grant.
The vesting periods of the 2018, 2017 and 2016 restricted stock unit awards are as follows (in actual shares):
## Table 1 ##
We account for restricted stock awards at historical cost, which equals its fair market value at the date of grant, which is amortized to compensation expense ratably over the vesting period of the participants.
Future changes in the fair value of our common stock that is owed to the participants do not have any impact on the amounts recorded in our consolidated financial statements.
During 2018, 2017 and 2016, we charged $27.2 million, $19.6 million and $18.2 million, respectively, to compensation expense related to restricted stock awards granted in 2008 through 2018.
The total intrinsic value of unvested restricted stock at December 31, 2018 and 2017 was $140.8 million and $109.3 million, respectively.
During 2018 and 2017, equity awards (including accrued dividends) with an aggregate fair value of $23.6 million and $23.3 million were vested and distributed to employees under this plan.
Supplemental and contingent revenues - Reported supplemental and contingent revenues recognized in 2018, 2017 and 2016 by quarter are as follows (in millions):
## Table 2 ##
Investment income and gains realized on books of business sales - This primarily represents interest income earned on cash, cash equivalents and restricted funds, interest income from premium financing and one-time gains related to sales of books of business, which were $10.2 million, $3.4 million and $6.6 million in 2018, 2017 and 2016, respectively.
Investment income in 2018 increased compared to 2017 primarily due to increases in interest income from our Australia and New Zealand premium financing business, which relates to an increase in the volume of premium financing business written in 2018, and increases in interest income earned on client held funds in the U.
S due to an increase in interest rates.
Investment income in 2017 increased compared to 2016 primarily due to increases in interest income from our premium financing business.
Compensation expense - The following provides non-GAAP information that management believes is helpful when comparing 2018 and 2017 compensation expense and 2017 and 2016 compensation expense (in millions):
## Table 3 ##
The increase in compensation expense in 2018 compared to 2017 was primarily due to an increase in the average number of employees, salary increases, one-time compensation payments and increases in incentive compensation linked to our overall operating results ($197.1 million in the aggregate), increases in employee benefits expense - $24.4 million, severance related costs - $10.9 million, deferred compensation - $2.4 million, temporary staffing - $1.2 million, partially offset by decreases in stock compensation expense - $0.8 million and earnout related compensation charges - $0.4 million.
The increase in employee headcount in 2018 compared to 2017 primarily relates to the addition of employees associated with the acquisitions that we completed in 2018 and new production hires.
The increase in severance related costs is due to the elimination or restructuring of approximately 325 positions that took place during 2018.
The increase in compensation expense in 2017 compared to 2016 was primarily due to an increase in the average number of employees, salary increases, one-time compensation payments and increases in incentive compensation linked to our overall
Performance Graph The annual changes for the period shown November 18, 2013 (when our ordinary shares began trading in the "when-issued" market) to December 31, 2016 in the graph on this page are based on the assumption that $100 had been invested in Allegion plc ordinary shares, the Standard & Poor’s 500 Stock Index ("S&P 500") and the Standard & Poor's 400 Capital Goods Index ("S&P 400 Capital Goods") on November 18, 2013, and that all quarterly dividends were reinvested.
The total cumulative dollar returns shown on the graph represent the value that such investments would have had on December 31, 2016.

<table><tr><td></td><td colspan="3"> Shares Granted</td></tr><tr><td> Vesting Period</td><td> 2008</td><td> 2007</td><td> 2006</td></tr><tr><td>Two years</td><td>-</td><td>-</td><td>58,000</td></tr><tr><td>Three years</td><td>66,000</td><td>61,000</td><td>51,000</td></tr><tr><td>Four years</td><td>176,000</td><td>137,000</td><td>19,000</td></tr><tr><td>Five years</td><td>43,000</td><td>60,000</td><td>51,000</td></tr><tr><td>Ten years</td><td>-</td><td>-</td><td>50,000</td></tr><tr><td>Total shares granted</td><td>285,000</td><td>258,000</td><td>229,000</td></tr></table>
<table><tr><td></td><td colspan="3"> Restricted Stock Units Granted</td></tr><tr><td> Vesting Period</td><td> 2018</td><td> 2017</td><td> 2016</td></tr><tr><td>One year</td><td>18,900</td><td>21,600</td><td>27,417</td></tr><tr><td>Two years</td><td>12,700</td><td>12,750</td><td>—</td></tr><tr><td>Five years</td><td>407,500</td><td>442,000</td><td>451,750</td></tr><tr><td>Total shares granted</td><td>439,100</td><td>476,350</td><td>479,167</td></tr></table>
<table><tr><td></td><td> Q1</td><td> Q2</td><td> Q3</td><td> Q4</td><td> Full Year</td></tr><tr><td> 2018</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Reported supplemental revenues</td><td>$52.0</td><td>$48.1</td><td>$43.9</td><td>$45.9</td><td>$189.9</td></tr><tr><td>Reported contingent revenues</td><td>34.9</td><td>21.8</td><td>25.7</td><td>15.6</td><td>98.0</td></tr><tr><td>Reported supplemental and contingent revenues</td><td>$86.9</td><td>$69.9</td><td>$69.6</td><td>$61.5</td><td>$287.9</td></tr><tr><td> 2017</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Reported supplemental revenues</td><td>$47.3</td><td>$35.8</td><td>$36.9</td><td>$38.0</td><td>$158.0</td></tr><tr><td>Reported contingent revenues</td><td>35.0</td><td>21.3</td><td>21.8</td><td>21.4</td><td>99.5</td></tr><tr><td>Reported supplemental and contingent revenues</td><td>$82.3</td><td>$57.1</td><td>$58.7</td><td>$59.4</td><td>$257.5</td></tr><tr><td> 2016</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Reported supplemental revenues</td><td>$41.8</td><td>$31.9</td><td>$34.5</td><td>$31.7</td><td>$139.9</td></tr><tr><td>Reported contingent revenues</td><td>31.9</td><td>21.7</td><td>22.2</td><td>22.1</td><td>97.9</td></tr><tr><td>Reported supplemental and contingent revenues</td><td>$73.7</td><td>$53.6</td><td>$56.7</td><td>$53.8</td><td>$237.8</td></tr></table>
<table><tr><td></td><td>2018</td><td>2017</td><td>2017</td><td>2016</td></tr><tr><td>Compensation expense, as reported</td><td>$2,447.1</td><td>$2,212.3</td><td>$2,212.3</td><td>$2,040.2</td></tr><tr><td>Acquisition integration</td><td>-2.5</td><td>-7.6</td><td>-7.6</td><td>-16.9</td></tr><tr><td>Workforce related charges</td><td>-32.3</td><td>-21.4</td><td>-21.4</td><td>-17.5</td></tr><tr><td>Acquisition related adjustments</td><td>-14.2</td><td>-9.1</td><td>-9.1</td><td>-3.7</td></tr><tr><td>Levelized foreign currency translation</td><td>-</td><td>8.7</td><td>-</td><td>-11.7</td></tr><tr><td>Compensation expense, as adjusted</td><td>$2,398.1</td><td>$2,182.9</td><td>$2,174.2</td><td>$1,990.4</td></tr><tr><td>Reported compensation expense ratios</td><td>57.6%</td><td>58.0%</td><td>58.0%</td><td>58.3%</td></tr><tr><td>Adjusted compensation expense ratios</td><td>56.6%</td><td>57.1%</td><td>57.0%</td><td>57.1%</td></tr><tr><td>Reported revenues</td><td>$4,246.9</td><td>$3,815.1</td><td>$3,815.1</td><td>$3,501.6</td></tr><tr><td>Adjusted revenues - see page 28</td><td>$4,236.7</td><td>$3,824.7</td><td>$3,811.7</td><td>$3,485.3</td></tr></table>

Question: What's the average of Compensation expense, as adjusted of 2017, and Four years of Shares Granted 2006 ?