expense is equal to the contribution called for by the plan formula and is composed of the cash contributed for the purchase of common stock on the open market or the fair value of the shares contributed from treasury stock.
Dividends on shares held by the ESOP are charged to retained earnings, and shares are treated as outstanding for the calculation of earnings per common share.
Note 19.
Occupancy Expense and Information Systems and Communications Expense Occupancy expense and information systems and communications expense include expense for depreciation of buildings, leasehold improvements, computers, equipment and furniture and fixtures.
Total depreciation expense for the years ended December 31, 2011, 2010 and 2009 was $368 million, $373 million and $380 million, respectively.
We lease 1,025,000 square feet at One Lincoln Street, our headquarters building located in Boston, Massachusetts, and a related 366,000-square-foot underground parking garage, under 20-year, non-cancelable capital leases expiring in September 2023.
A portion of the lease payments is offset by subleases for 153,390 square feet of the building.
In addition, we lease approximately 362,000 square feet at 20 Churchill Place, an office building located in the U. K. , under a 20-year capital lease expiring in December 2028, with the option to cancel the lease after the first 15 years.
As of December 31, 2011 and 2010, an aggregate net book value of $565 million and $606 million, respectively, related to the above-described capital leases was recorded in premises and equipment, with the related liability recorded in long-term debt in our consolidated statement of condition.
Capital lease asset amortization is recorded in occupancy expense in our consolidated statement of income over the respective lease term.
Lease payments are recorded as a reduction of the liability, with a portion recorded as imputed interest expense.
For the years ended December 31, 2011, 2010 and 2009, interest expense related to these capital lease obligations, reflected in net interest revenue, was $43 million, $44 million and $47 million, respectively.
As of December 31, 2011 and 2010, accumulated amortization of capital lease assets was $273 million and $230 million, respectively.
We have entered into non-cancelable operating leases for premises and equipment.
Nearly all of these leases include renewal options.
Costs related to operating leases for office space are recorded in occupancy expense.
Costs related to operating leases for computers and equipment are recorded in information systems and communications expense.
Total rental expense, net of sublease revenue, amounted to $232 million, $241 million and $230 million for the years ended December 31, 2011, 2010 and 2009, respectively.
Total rental expense was reduced by sublease revenue of $12 million for the years ended December 31, 2011 and 2010 and $17 million for the year ended December 31, 2009.
The following table presents a summary of future minimum lease payments under non-cancelable capital and operating leases as of December 31, 2011.
Aggregate future minimum rental commitments have been reduced by aggregate sublease rental commitments of $32 million for capital leases and $19 million for operating leases.
## Table 0 ##
In 2011, management revised its methodology with respect to funds transfer pricing, which is used in the measurement of business unit net interest revenue.
Net interest revenue and average assets for 2010 have been restated for comparative purposes to reflect the revised methodology.
Amounts for 2009 were not restated.
## Table 1 ##
Investment Servicing Total revenue for 2011 increased 3% from 2010 and total fee revenue increased 11% in the same comparison.
The increase in total fee revenue generally related to servicing fees, securities finance and trading services revenue, and was partly offset by a decline in processing fees and other revenue.
The increase in servicing fees in 2011 compared to 2010 primarily resulted from the impact on currentperiod revenue of new business awarded to us and installed during 2011 and prior periods, the full-year impact of revenue generated by the acquired Intesa securities services and MIFA businesses and increases in daily average equity market valuations.
Securities finance revenue increased 26% primarily as a result of the effect of higher spreads, partly offset by a decline in average lending volumes.
Trading services revenue increased 10% compared to 2010, as a result of an increase in foreign exchange trading revenue related to higher client trading volumes, partly offset by a decline in currency volatility.
Servicing fees, trading services revenue and gains (losses) related to investment securities, net, for our Investment Servicing business line are identical to the respective consolidated results.
Refer to “Servicing Fees,” “Trading Services” and “Gains (Losses) Related to Investment Securities, Net” under “Total Revenue” in this Management’s Discussion and Analysis for a more in-depth discussion.
A discussion of processing fees and other revenue is provided in “Processing Fees and Other” under “Total Revenue.
” Net interest revenue declined 15% compared to 2010, primarily as a result of lower conduit-related discount accretion.
The level of accretion recorded in 2011 was significantly affected by our December 2010 investment portfolio repositioning.
A portion of net interest revenue is allocated to the Investment Management business line based on the volume of client liabilities attributable to that line of business.
## Table 2 ##
The increase in total revenue compared to 2009 was driven primarily by fee revenue, partly offset by net losses related to investment securities in 2010, which included a net sale loss related to a repositioning of the investment portfolio.
The 18% increase in servicing fees from 2009 primarily resulted from the impact of new business awarded to us and installed during 2010 and prior periods on current-period revenue, the addition of revenue generated by the acquired Intesa and MIFA businesses from May 17 and April 1, respectively, through December 31, and increases in daily average equity market valuations.
Approximately 41% of our servicing fees were generated outside the U. S.  in 2010, compared with 37% in 2009.
Assets under custody and administration were $21.53 trillion, compared to $18.79 trillion in 2009, with the increase from 2009 primarily the result of increases in equity market valuations and a higher level of new servicing business won and installed prior to December 31, 2010, as well as the effects of the Intesa and MIFA acquisitions.
Management fees increased 8% from 2009 to 2010, primarily from the impact of increases in average month-end equity market valuations and, to a lesser extent, the impact of new business won and installed in prior periods on current-period revenue.
Approximately 34% of our management fees were generated outside the U. S.  in 2010, down from 36% in 2009.
Assets under management increased to $2.01 trillion at December 31, 2010, up $59 billion from $1.95 trillion a year earlier.
Trading services revenue increased 1% primarily as a result of higher electronic trading volumes, partly offset by a decrease in foreign exchange trading revenue as a result of lower spreads on foreign exchange trades and a decline in currency volatility, partly offset by higher client volumes.
Securities finance revenue was down 44% as a result of lower spreads across all lending programs.
Processing fees and other revenue increased 104% due to higher net revenue from structured products, including fees from our tax-exempt investment program, and higher net revenue related to certain tax-advantaged investments.
Net interest revenue increased primarily as a result of the impact of a higher portfolio allocation to fixedrate investment securities, U. S.  and non-U.
S.  investment portfolio growth, and the impact of the deposits added in May 2010 in connection with the acquisition of the Intesa securities services business, partly offset by lower spreads on both floating-rate investment securities and non-U.
S.  transaction deposits.
We recorded net realized losses of $55 million from sales of investment securities and, separately, losses from other-than-temporary impairment related to credit of $231 million for 2010, compared to net sale gains of $368 million and losses from other-than-temporary impairment related to credit of $227 million for 2009.
In December 2010, we undertook a repositioning of our investment securities portfolio by selling approximately
When we purchase an asset, we capitalize all costs necessary to make the asset ready for its intended use.
However, many of our assets are self-constructed.
A large portion of our capital expenditures is for track structure expansion (capacity projects) and replacement (program projects), which is typically performed by our employees.
Approximately 13% of our full-time equivalent employees are dedicated to the construction of capital assets.
Costs that are directly attributable or overhead costs that relate directly to capital projects are capitalized.
Direct costs that are capitalized as part of self-constructed assets include material, labor, and work equipment.
Indirect costs are capitalized if they clearly relate to the construction of the asset.
These costs are allocated using appropriate statistical bases.
The capitalization of indirect costs is consistent with FASB Statement No.67, Accounting for Costs and Initial Rental Operations of Real Estate Projects.
General and administrative expenditures are expensed as incurred.
Normal repairs and maintenance are also expensed as incurred, while costs incurred that extend the useful life of an asset, improve the safety of our operations or improve operating efficiency are capitalized.
Assets held under capital leases are recorded at the lower of the net present value of the minimum lease payments or the fair value of the leased asset at the inception of the lease.
Amortization expense is computed using the straight-line method over the shorter of the estimated useful lives of the assets or the period of the related lease.10.
Accounts Payable and Other Current Liabilities
## Table 3 ##
11.
Fair Value Measurements During the first quarter of 2008, we fully adopted FASB Statement No.157, Fair Value Measurements (FAS 157).
FAS 157 established a framework for measuring fair value and expanded disclosures about fair value measurements.
The adoption of FAS 157 had no impact on our financial position or results of operations.
FAS 157 applies to all assets and liabilities that are measured and reported on a fair value basis.
This enables the reader of the financial statements to assess the inputs used to develop those measurements by establishing a hierarchy for ranking the quality and reliability of the information used to determine fair values.
The statement requires that each asset and liability carried at fair value be classified into one of the following categories: Level 1: Quoted market prices in active markets for identical assets or liabilities.
Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data.
Level 3: Unobservable inputs that are not corroborated by market data.

<table><tr><td> (In millions)</td><td>Capital Leases</td><td> Operating Leases</td><td> Total</td></tr><tr><td>2012</td><td>$68</td><td>$237</td><td>$305</td></tr><tr><td>2013</td><td>68</td><td>207</td><td>275</td></tr><tr><td>2014</td><td>68</td><td>182</td><td>250</td></tr><tr><td>2015</td><td>67</td><td>132</td><td>199</td></tr><tr><td>2016</td><td>71</td><td>96</td><td>167</td></tr><tr><td>Thereafter</td><td>647</td><td>275</td><td>922</td></tr><tr><td>Total minimum lease payments</td><td>989</td><td>$1,129</td><td>$2,118</td></tr><tr><td>Less amount representing interest payments</td><td>-327</td><td></td><td></td></tr><tr><td>Present value of minimum lease payments</td><td>$662</td><td></td><td></td></tr></table>
<table><tr><td></td><td colspan="3">Investment Servicing</td><td colspan="3">Management Investment</td><td colspan="3">Other</td><td colspan="3"> Total</td></tr><tr><td> Years ended December 31,</td><td>2011</td><td>2010</td><td>2009</td><td>2011</td><td>2010</td><td>2009</td><td>2011</td><td>2010</td><td>2009</td><td>2011</td><td>2010</td><td> 2009</td></tr><tr><td> (Dollars in millions, except where otherwise noted)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fee revenue:</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Servicing fees</td><td>$4,382</td><td>$3,938</td><td>$3,334</td><td></td><td></td><td></td><td></td><td></td><td></td><td>$4,382</td><td>$3,938</td><td>$3,334</td></tr><tr><td>Management fees</td><td>—</td><td>—</td><td>—</td><td>$917</td><td>$829</td><td>$766</td><td></td><td></td><td></td><td>917</td><td>829</td><td>766</td></tr><tr><td>Trading services</td><td>1,220</td><td>1,106</td><td>1,094</td><td>—</td><td>—</td><td>—</td><td></td><td></td><td></td><td>1,220</td><td>1,106</td><td>1,094</td></tr><tr><td>Securities finance</td><td>333</td><td>265</td><td>387</td><td>45</td><td>53</td><td>183</td><td></td><td></td><td></td><td>378</td><td>318</td><td>570</td></tr><tr><td>Processing fees and other</td><td>195</td><td>225</td><td>72</td><td>102</td><td>124</td><td>99</td><td></td><td></td><td></td><td>297</td><td>349</td><td>171</td></tr><tr><td>Total fee revenue</td><td>6,130</td><td>5,534</td><td>4,887</td><td>1,064</td><td>1,006</td><td>1,048</td><td></td><td></td><td></td><td>7,194</td><td>6,540</td><td>5,935</td></tr><tr><td>Net interest revenue</td><td>2,181</td><td>2,553</td><td>2,489</td><td>152</td><td>146</td><td>68</td><td></td><td></td><td>$7</td><td>2,333</td><td>2,699</td><td>2,564</td></tr><tr><td>Gains (Losses) related to investment securities, net</td><td>67</td><td>58</td><td>141</td><td>—</td><td>—</td><td>—</td><td></td><td>$-344</td><td>—</td><td>67</td><td>-286</td><td>141</td></tr><tr><td>Total revenue</td><td>8,378</td><td>8,145</td><td>7,517</td><td>1,216</td><td>1,152</td><td>1,116</td><td></td><td>-344</td><td>7</td><td>9,594</td><td>8,953</td><td>8,640</td></tr><tr><td>Provision for loan losses</td><td>—</td><td>25</td><td>148</td><td>—</td><td>—</td><td>1</td><td></td><td>—</td><td>—</td><td>—</td><td>25</td><td>149</td></tr><tr><td>Expenses from operations</td><td>5,889</td><td>5,430</td><td>4,920</td><td>900</td><td>753</td><td>747</td><td></td><td>—</td><td>—</td><td>6,789</td><td>6,183</td><td>5,667</td></tr><tr><td>Securities lending charge</td><td>—</td><td>75</td><td>—</td><td>—</td><td>339</td><td>—</td><td></td><td>—</td><td>—</td><td>—</td><td>414</td><td>—</td></tr><tr><td>Provision for fixed-income litigation exposure</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td><td>250</td><td></td><td>—</td><td>—</td><td>—</td><td>—</td><td>250</td></tr><tr><td>Acquisition costs</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td><td>$16</td><td>89</td><td>49</td><td>16</td><td>89</td><td>49</td></tr><tr><td>Restructuring charges</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td><td>253</td><td>156</td><td>—</td><td>253</td><td>156</td><td>—</td></tr><tr><td>Total expenses</td><td>5,889</td><td>5,505</td><td>4,920</td><td>900</td><td>1,092</td><td>997</td><td>269</td><td>245</td><td>49</td><td>7,058</td><td>6,842</td><td>5,966</td></tr><tr><td>Income from continuing operations before income taxes</td><td>$2,489</td><td>$2,615</td><td>$2,449</td><td>$316</td><td>$60</td><td>$118</td><td>$-269</td><td>$-589</td><td>$-42</td><td>$2,536</td><td>$2,086</td><td>$2,525</td></tr><tr><td>Pre-tax margin</td><td>30%</td><td>32%</td><td>33%</td><td>26%</td><td>5%</td><td>11%</td><td></td><td></td><td></td><td>26%</td><td>23%</td><td>29%</td></tr><tr><td>Average assets (in billions)</td><td>$169.4</td><td>$146.9</td><td>$143.7</td><td>$5.4</td><td>$5.1</td><td>$3.1</td><td></td><td></td><td></td><td>$174.8</td><td>$152.0</td><td>$146.8</td></tr></table>
<table><tr><td> Years ended December 31,</td><td>2010</td><td> 2009</td><td>% Change</td></tr><tr><td> (Dollars in millions)</td><td></td><td></td><td></td></tr><tr><td>Fee revenue:</td><td></td><td></td><td></td></tr><tr><td>Servicing fees</td><td>$3,938</td><td>$3,334</td><td>18%</td></tr><tr><td>Management fees</td><td>829</td><td>766</td><td>8</td></tr><tr><td>Trading services</td><td>1,106</td><td>1,094</td><td>1</td></tr><tr><td>Securities finance</td><td>318</td><td>570</td><td>-44</td></tr><tr><td>Processing fees and other</td><td>349</td><td>171</td><td>104</td></tr><tr><td>Total fee revenue</td><td>6,540</td><td>5,935</td><td>10</td></tr><tr><td>Net interest revenue:</td><td></td><td></td><td></td></tr><tr><td>Interest revenue</td><td>3,462</td><td>3,286</td><td>5</td></tr><tr><td>Interest expense</td><td>763</td><td>722</td><td>6</td></tr><tr><td>Net interest revenue</td><td>2,699</td><td>2,564</td><td>5</td></tr><tr><td>Gains (Losses) related to investment securities, net</td><td>-286</td><td>141</td><td></td></tr><tr><td>Total revenue</td><td>$8,953</td><td>$8,640</td><td>4</td></tr></table>
<table><tr><td><i>Millions of Dollars</i></td><td><i>Dec. 31, 2008</i></td><td><i>Dec. 31, 2007</i></td></tr><tr><td>Accounts payable</td><td>$629</td><td>$732</td></tr><tr><td>Accrued wages and vacation</td><td>367</td><td>394</td></tr><tr><td>Accrued casualty costs</td><td>390</td><td>371</td></tr><tr><td>Income and other taxes</td><td>207</td><td>343</td></tr><tr><td>Dividends and interest</td><td>328</td><td>284</td></tr><tr><td>Equipment rents payable</td><td>93</td><td>103</td></tr><tr><td>Other</td><td>546</td><td>675</td></tr><tr><td>Total accounts payable and other current liabilities</td><td>$2,560</td><td>$2,902</td></tr></table>

Question: what was the percentage change in accrued wages and vacation from 2007 to 2008?
Answer: -0.06853