ENTERGY MISSISSIPPI, INC.  MANAGEMENT'S FINANCIAL DISCUSSION AND ANALYSIS Results of Operations Net Income 2008 Compared to 2007 Net income decreased $12.4 million primarily due to higher other operation and maintenance expenses, lower other income, and higher depreciation and amortization expenses, partially offset by higher net revenue.2007 Compared to 2006 Net income increased $19.8 million primarily due to higher net revenue, lower other operation and maintenance expenses, higher other income, and lower interest expense, partially offset by higher depreciation and amortization expenses.
Net Revenue 2008 Compared to 2007 Net revenue consists of operating revenues net of: 1) fuel, fuel-related expenses, and gas purchased for resale, 2) purchased power expenses, and 3) other regulatory charges.
Following is an analysis of the change in net revenue comparing 2008 to 2007.
## Table 0 ##
The Attala costs variance is primarily due to an increase in the Attala power plant costs that are recovered through the power management rider.
The net income effect of this recovery in limited to a portion representing an allowed return on equity with the remainder offset by Attala power plant costs in other operation and maintenance expenses, depreciation expenses, and taxes other than income taxes.
The recovery of Attala power plant costs is discussed further in "Liquidity and Capital Resources - Uses of Capital" below.
The rider revenue variance is the result of a storm damage rider that became effective in October 2007.
The establishment of this rider results in an increase in rider revenue and a corresponding increase in other operation and maintenance expense for the storm reserve with no effect on net income.
The base revenue variance is primarily due to a formula rate plan increase effective July 2007.
The formula rate plan filing is discussed further in "State and Local Rate Regulation" below.
The reserve equalization variance is primarily due to changes in the Entergy System generation mix compared to the same period in 2007.
PRUDENTIAL FINANCIAL, INC.  Notes to Consolidated Financial Statements 11.
SHORT-TERM AND LONG-TERM DEBT Short-term Debt Short-term debt at December 31, is as follows:
## Table 1 ##
(1) Assets under set-off arrangements represent a reduction in the amount of note payables included in short-term debt, relating to an arrangement where valid rights of set-off exist and it is the intent of both parties to settle on a net basis under legally enforceable arrangements.
The weighted average interest rate on outstanding short-term debt, excluding the current portion of long-term debt and convertible debt, was approximately 4.2% and 2.2% at December 31, 2005 and 2004, respectively.
At December 31, 2005, the Company had $3,845 million in committed lines of credit from numerous financial institutions, of which $3,832 million were unused.
These lines of credit generally have terms ranging from one to five years.
The Company issues commercial paper primarily to manage operating cash flows and existing commitments, to meet working capital needs and to take advantage of current investment opportunities.
At December 31, 2005 and 2004, a portion of commercial paper borrowings were supported by $3,000 million and $2,500 million of the Company’s existing lines of credit, respectively.
At December 31, 2005 and 2004, the weighted average maturity of commercial paper outstanding was 16 and 23 days, respectively.
On November 16, 2005, Prudential Financial issued $2.0 billion in floating rate convertible senior notes, convertible by the holders at any time after issuance into cash and shares of Prudential Financial’s Common Stock.
The conversion price, initially $90 per share, is subject to adjustment upon certain corporate events, such as certain changes in control or increases to the Company’s dividends above the current $0.78 annual dividend per share.
The conversion feature requires net settlement in shares; therefore, upon conversion, a holder would receive cash equal to the par amount of the notes surrendered for conversion and shares of Prudential Financial, Inc.  Common Stock only for the portion of the settlement amount in excess of the par amount, if any.
The convertible notes are redeemable by Prudential Financial on or after May 20, 2007, at par plus accrued interest.
Holders may require Prudential Financial to repurchase the convertible notes, at par plus accrued interest, on May 15, 2007 or on November 15, 2010, 2015, 2020, 2025, and 2030.
The Company has entered into a registration rights agreement with the investors in the convertible debt, which requires that the Company attempt to register the convertible debt and the shares into which the debt is convertible for resale.
In the event the Company is unable to register the shares, or is unable to maintain the effectiveness of such registration, the Company could be required to pay liquidated damages of 0.25% applied to the par amount of the notes for each interest period such default continues.
The interest rate on the convertible notes is a floating rate equal to 3-month LIBOR minus 2.76%, to be reset quarterly.
For the period from November 16, 2005, the date of issuance, to February 15, 2006, the first interest payment date, the interest rate is 1.57%.
2004 to 2003 Annual Comparison.
The Financial Advisory segment reported a loss, on an adjusted operating income basis, of $245 million in 2004, as discussed above.
In 2003, the segment reported a loss, on an adjusted operating income basis, of $111 million.
This loss includes a loss of $53 million from our securities brokerage operations prior to combination of these operations with Wachovia on July 1, 2003.
The segment’s loss for 2003 includes our share of earnings from Wachovia Securities, on a pre-tax basis and excluding transition costs, of $88 million.
Offsetting these results were expenses of $107 million relating primarily to obligations for litigation and regulatory matters we retained in connection with the contributed businesses.
Full year results from our securities brokerage operations for 2003 include $100 million of transition costs, of which $32 million represents our share of costs incurred by the venture, as well as a pre-tax gain of $22 million recorded on the completion of the combination of the businesses.
In addition, results for 2003 include income of $2 million from our equity sales and trading operations.
Retirement Operating Results The following table sets forth the Retirement segment’s operating results for the periods indicated.
## Table 2 ##
(1) Revenues exclude Realized investment gains (losses), net, and related adjustments.
For a discussion of these items see “—Realized Investment Gains and General Account Investments—Realized Investment Gains.
” (2) Benefits and expenses exclude related charges which represent the unfavorable (favorable) impact of Realized investment gains (losses), net, on change in reserves and the amortization of deferred policy acquisition costs.
For a discussion of these items see “—Realized Investment Gains and General Account Investments—Realized Investment Gains.
” (3) Revenues exclude net investment gains and losses on trading account assets supporting insurance liabilities.
For a discussion of these items see “—Trading account assets supporting insurance liabilities.
” (4) Benefits and expenses exclude changes in contractholder liabilities due to asset value changes in the pool of investments supporting these experiencerated contracts.
For a discussion of these items see “—Trading account assets supporting insurance liabilities.
” On April 1, 2004, we acquired the retirement business of CIGNA Corporation for cash consideration of $2.1 billion.
Beginning April 1, 2004, the results of the former CIGNA retirement business have been included in our consolidated results.
The majority of these results are reflected within our Retirement segment, as discussed below, and the remaining portion is reflected in our Asset Management segment.
See Note 3 to the Consolidated Financial Statements for further discussion of this acquisition and its purchase price allocation.
Adjusted Operating Income 2005 to 2004 Annual Comparison.
Adjusted operating income increased $164 million, from $334 million in 2004 to $498 million in 2005.
Results for the segment during 2005 included adjusted operating income of $195 million from the retirement business we acquired from CIGNA, compared to $128 million in 2004, which included only the initial nine months of results for these operations.
Adjusted operating income for the acquired retirement business for 2005 consisted of revenues of $1.295 billion and total benefits and expenses of $1.100 billion.
Revenues from the acquired business consisted primarily of $873 million in net investment income, mainly related to trading assets supporting insurance liabilities, and $289 million in asset management fees and other income.
Benefits and expenses from the acquired business consisted primarily of $677 million of interest credited to policyholders’ account balances and $434 million of general and administrative expense.
Transition costs related to the acquisition were $36 million in 2005 and $43 million in 2004.
Adjusted operating income from the segment’s original businesses, excluding the retirement business we acquired from CIGNA, increased $97 million, from $206 million in 2004 to $303 million in 2005.
Results for 2005 benefited by $49 million from mortgage prepayment income, which represents a $34 million benefit to the current year as compared to the prior year.
Results for 2005 also benefited by $27 million from reserve releases, which include updates of client census data on a group annuity block of business.
In addition, the 2005 period benefited from improved investment results, primarily reflecting lower crediting rates on full service general account liabilities, and from the collection of investment income on a previously defaulted bond in the first quarter of 2005 amounting to $7 million.2004 to 2003 Annual Comparison.
Adjusted operating income increased $142 million, from $192 million in 2003 to $334 million in 2004.
Results for the segment for 2004 include $128 million of adjusted operating income from the inclusion of CIGNA’s retirement
(2) Excludes assets of our asset management operations, including assets managed for third parties, and those assets classified as “separate accounts assets” on our balance sheet.
Our Japanese insurance operations use the Yen as their functional currency, as it is the currency in which they conduct the majority of their operations.
Although the majority of the Japanese general account is invested in Yen denominated investments, our Japanese insurance operations also hold significant investments denominated in U. S.  dollars, some of which may be hedged to Yen through third party contracts.
As of December 31, 2005, our Japanese insurance operations had $6.4 billion of investments denominated in U. S.  dollars, including $1.7 billion that were hedged to Yen through third party contracts.
As of December 31, 2004, our Japanese insurance operations had $6.2 billion of investments denominated in U. S.  dollars, including $3.8 billion that were hedged to Yen through third party contracts.
Investment Results The following tables set forth the income yield and investment income, excluding realized investment gains (losses), for each major investment category of our general account for the periods indicated.
## Table 3 ##
Year ended December 31, 2004
## Table 4 ##
(1) Yields are based on average carrying values except for fixed maturities, equity securities and securities lending activity.
Yields for fixed maturities are based on amortized cost.
Yields for equity securities are based on cost.
Yields for securities lending activity are calculated net of corresponding liabilities and rebate expenses.
Yields exclude investment income on assets other than those included in invested assets of the Financial Services Businesses.
Prior periods yields are presented on a basis consistent with the current period presentation.
(2) Includes investment income of securities brokerage, securities trading, banking operations, real estate and relocation services, and asset management operations.
The net investment income yield on our general account investments after investment expenses, excluding realized investment gains (losses), was 5.28% and 5.25% for the years ended December 31, 2005 and 2004, respectively.
The net investment income yield attributable to the Financial Services Businesses was 4.72% for the year ended December 31, 2005, compared to 4.60% for the year ended December 31, 2004.
The increase in yield was primarily due to an increase in fixed maturity yield, mainly attributable to the impact of investment activities related to the investment portfolio of our Japanese insurance operations, which is discussed in greater detail below.

<table><tr><td></td><td>Amount (In Millions)</td></tr><tr><td>2007 net revenue</td><td>$486.9</td></tr><tr><td>Attala costs</td><td>9.9</td></tr><tr><td>Rider revenue</td><td>6.0</td></tr><tr><td>Base revenue</td><td>5.1</td></tr><tr><td>Reserve equalization</td><td>-2.4</td></tr><tr><td>Net wholesale revenue</td><td>-4.0</td></tr><tr><td>Other</td><td>-2.7</td></tr><tr><td>2008 net revenue</td><td>$498.8</td></tr></table>
<table><tr><td></td><td> 2005 </td><td> 2004 </td></tr><tr><td></td><td colspan="2"> (in millions)</td></tr><tr><td>Commercial paper</td><td>$7,563</td><td>$2,447</td></tr><tr><td>Floating rate convertible senior notes</td><td>2,000</td><td>—</td></tr><tr><td>Notes payable</td><td></td><td></td></tr><tr><td>Note subject to set-off arrangements</td><td>95</td><td>—</td></tr><tr><td>Other notes payable</td><td>811</td><td>1,539</td></tr><tr><td>Current portion of long-term debt</td><td>740</td><td>58</td></tr><tr><td>Sub-total</td><td>11,209</td><td>4,044</td></tr><tr><td>Less assets under set-off arrangements-1</td><td>95</td><td>—</td></tr><tr><td>Total short-term debt</td><td>$11,114</td><td>$4,044</td></tr></table>
<table><tr><td></td><td colspan="3">Year ended December 31,</td></tr><tr><td></td><td>2005</td><td>2004</td><td>2003</td></tr><tr><td></td><td colspan="3">(in millions)</td></tr><tr><td> Operating results:</td><td></td><td></td><td></td></tr><tr><td>Revenues</td><td>$4,025</td><td>$3,225</td><td>$2,281</td></tr><tr><td>Benefits and expenses</td><td>3,527</td><td>2,891</td><td>2,089</td></tr><tr><td>Adjusted operating income</td><td>498</td><td>334</td><td>192</td></tr><tr><td>Realized investment gains (losses), net, and related adjustments(1)</td><td>26</td><td>76</td><td>-1</td></tr><tr><td>Related charges-2</td><td>-12</td><td>-11</td><td>5</td></tr><tr><td>Investment gains (losses) on trading account assets supporting insurance liabilities, net(3)</td><td>-219</td><td>-111</td><td>—</td></tr><tr><td>Change in experience-rated contractholder liabilities due to asset value changes-4</td><td>142</td><td>57</td><td>—</td></tr><tr><td>Income from continuing operations before income taxes, extraordinary gain on acquisition and cumulative effect of accountingchange</td><td>$435</td><td>$345</td><td>$196</td></tr></table>
<table><tr><td></td><td colspan="6">Year ended December 31, 2005</td></tr><tr><td></td><td colspan="2">Financial Services Businesses</td><td colspan="2">Closed Block Business</td><td colspan="2">Combined</td></tr><tr><td></td><td>Yield-1</td><td>Amount</td><td>Yield-1</td><td>Amount</td><td>Yield-1</td><td>Amount</td></tr><tr><td></td><td colspan="6">($ in millions)</td></tr><tr><td>Fixed maturities</td><td>4.68%</td><td>$4,717</td><td>6.64%</td><td>$2,840</td><td>5.26%</td><td>$7,556</td></tr><tr><td>Trading account assets supporting insurance liabilities</td><td>4.33</td><td>576</td><td>—</td><td>—</td><td>4.33</td><td>582</td></tr><tr><td>Equity securities</td><td>3.43</td><td>53</td><td>2.31</td><td>52</td><td>2.77</td><td>105</td></tr><tr><td>Commercial loans</td><td>6.62</td><td>1,016</td><td>7.86</td><td>548</td><td>7.15</td><td>1,564</td></tr><tr><td>Policy loans</td><td>4.91</td><td>141</td><td>6.26</td><td>329</td><td>5.79</td><td>470</td></tr><tr><td>Short-term investments and cash equivalents</td><td>2.82</td><td>202</td><td>5.27</td><td>129</td><td>3.14</td><td>331</td></tr><tr><td>Other investments</td><td>9.23</td><td>361</td><td>23.10</td><td>204</td><td>11.81</td><td>623</td></tr><tr><td>Gross investment income before investment expenses</td><td>4.92</td><td>7,066</td><td>6.82</td><td>4,102</td><td>5.49</td><td>11,231</td></tr><tr><td>Investment expenses</td><td>-0.20</td><td>-477</td><td>-0.24</td><td>-381</td><td>-0.21</td><td>-858</td></tr><tr><td>Investment income after investment expenses</td><td>4.72%</td><td>6,589</td><td>6.58%</td><td>3,721</td><td>5.28%</td><td>10,373</td></tr><tr><td>Investment results of other entities and operations-2</td><td></td><td>250</td><td></td><td>—</td><td></td><td>187</td></tr><tr><td>Total investment income</td><td></td><td>$6,839</td><td></td><td>$3,721</td><td></td><td>$10,560</td></tr></table>
<table><tr><td></td><td colspan="6">Year ended December 31, 2004</td></tr><tr><td></td><td colspan="2">Financial Services Businesses</td><td colspan="2">Closed Block Business</td><td colspan="2">Combined</td></tr><tr><td></td><td>Yield-1</td><td>Amount</td><td>Yield-1</td><td>Amount</td><td>Yield-1</td><td>Amount</td></tr><tr><td></td><td colspan="6">($ in millions)</td></tr><tr><td>Fixed maturities</td><td>4.60%</td><td>$3,975</td><td>6.82%</td><td>$2,709</td><td>5.29%</td><td>$6,684</td></tr><tr><td>Trading account assets supporting insurance liabilities</td><td>4.04</td><td>364</td><td>—</td><td>—</td><td>4.04</td><td>364</td></tr><tr><td>Equity securities</td><td>3.57</td><td>40</td><td>2.54</td><td>48</td><td>2.93</td><td>88</td></tr><tr><td>Commercial loans</td><td>6.71</td><td>947</td><td>7.93</td><td>545</td><td>7.09</td><td>1,492</td></tr><tr><td>Policy loans</td><td>4.71</td><td>125</td><td>6.36</td><td>338</td><td>5.81</td><td>463</td></tr><tr><td>Short-term investments and cash equivalents</td><td>1.61</td><td>102</td><td>2.96</td><td>72</td><td>1.84</td><td>174</td></tr><tr><td>Other investments</td><td>8.18</td><td>330</td><td>21.59</td><td>205</td><td>10.94</td><td>535</td></tr><tr><td>Gross investment income before investment expenses</td><td>4.80</td><td>5,883</td><td>6.96</td><td>3,917</td><td>5.46</td><td>9,800</td></tr><tr><td>Investment expenses</td><td>-0.20</td><td>-312</td><td>-0.25</td><td>-236</td><td>-0.21</td><td>-548</td></tr><tr><td>Investment income after investment expenses</td><td>4.60%</td><td>5,571</td><td>6.71%</td><td>3,681</td><td>5.25%</td><td>9,252</td></tr><tr><td>Investment results of other entities and operations-2</td><td></td><td>178</td><td></td><td>—</td><td></td><td>178</td></tr><tr><td>Total investment income</td><td></td><td>$5,749</td><td></td><td>$3,681</td><td></td><td>$9,430</td></tr></table>

Question: what percent of the change in net revenue was due to rider revenue?
Answer: 0.5042