Amounts are impacted by accumulated other comprehensive income totaling $258.4 million in 2014, $119.1 million in 2013, $289.9 million in 2012, $177.8 million in 2011, and $51.6 million in 2010. These amounts are net of deferred income taxes and other adjustments for assumed changes in deferred acquisition costs, unearned revenue reserve, value of insurance in force acquired and policyholder liabilities.
The U.S. 10 Year Treasury yield declined during 2014 from 3.04% at December 31, 2013 to 2.17% at December 31, 2014.
The weighted average yield on cash and invested assets for individual annuities decreased in 2014 and 2013, compared to the prior periods, primarily due to lower yields on new investment acquisitions from premium receipts and reinvestment of the proceeds from maturing investments, compared with the average existing portfolio yield, partially offset by continued higher investment fee income. See the "Financial Condition" section which follows for additional information regarding the yields obtained on investment acquisitions. Weighted average interest crediting rates on our individual annuity products decreased due to crediting rate actions taken in response to the declining portfolio yield.
Comparability between periods was also impacted by the correction of an immaterial error which increased pre-tax earnings by $2.8 million in 2013. This correction was related to a reclassification of certain product loads from deferred revenue to earned income and increased interest sensitive product charges $6.3 million, changes in reserves classified with interest sensitive death benefits $2.5 million and amortization of deferred acquisition costs $1.0 million.
Equity securities totaled $112.6 million at December 31, 2014 and $91.6 million at December 31, 2013. Gross unrealized gains totaled $5.9 million and gross unrealized losses totaled $0.7 million at December 31, 2014. At December 31, 2013, gross unrealized gains totaled $3.9 million and gross unrealized losses totaled $2.4 million on these securities. The unrealized losses during 2014 were primarily attributable to non-redeemable perpetual preferred securities from issuers in the financial sector. See Note 2 to our consolidated financial statements included in Item 8 for further discussion regarding our analysis of unrealized losses related to these securities.
As discussed in Note 7 to our consolidated financial statements included in Item 8, we have periodically taken advantage of opportunities to repurchase our outstanding Class A and Class B common stock through tender offers and Class A common stock repurchase plans approved by our Board of Directors. There was $42.7 million remaining available for repurchases at December 31, 2014, under the current $50 million Class A common stock repurchase plan. Completion of this program is dependent on market conditions and other factors. There is no guarantee as to the exact timing of any repurchases or the number of shares that we will repurchase. The share repurchase program may be modified or terminated at any time without prior notice. We repurchased 0.4 million shares of Class A common stock for $18.5 million in 2014, 0.4 million shares of Class A and 1.0 million shares of Class B common stock for $60.6 million in 2013 and 5.5 million shares of stock for $181.9 million in 2012. These transactions were primarily funded with available cash and resources at the parent company, including proceeds from the sale of EquiTrust Life received during 2011 and dividends received from Farm Bureau Life of $45.0 million in 2014, $140.0 million in 2013 and $45.0 million in 2012.
In January 2014, the Financial Accounting Standards Board (FASB) issued guidance related to accounting for investments in low income housing tax credit limited partnerships. Our low income housing tax credit investments totaled $84.8 million at December 31, 2014 and $76.2 million at December 31, 2013. Presently, we account for these investments under the equity method and include related tax benefits as a component of equity income. The new guidance allows us the option to account for these partnerships using the proportional amortization method, which amortizes the acquisition cost of the partnership in proportion to the recognition of the tax benefits associated with these projects. The tax credits, net of the amortization of the partnership interest, would be recognized as a component of income taxes. This guidance will be effective for fiscal years beginning after December 15, 2014 and must be applied retrospectively, for companies that elect to adopt the proportional amortization method. We do not plan to change our accounting practice for investments in low income housing tax credit limited partnerships.
The separate account assets are principally comprised of stock and bond mutual funds. The net amount at risk for these contracts is based on the amount by which GMDB, IDB or GMIB exceeds account value. The reserve for GMDBs, IDBs or GMIBs, determined using modeling techniques and industry mortality assumptions, that is included in future policy benefits, totaled $3.3 million at December 31, 2014 and $2.4 million at December 31, 2013. The weighted average age of the contract holders with GMDB, IDB or GMIB rider exposure was 62 years at December 31, 2014 and 63 years at December 31, 2013. Benefits paid for GMDBs, IDBs and GMIBs totaled $0.2 million for 2014, $0.3 million for 2013 and $0.2 million for 2012.
The Plans' prior service costs are amortized using a straight-line amortization method over the average remaining service period of the employees. For actuarial gains and losses, we use a corridor (10% of the greater of the projected benefit obligation or the market related value of plan assets) to determine the amounts to amortize. For the Multiemployer Plan it is expected that net periodic pension cost in 2015 will include $10.4 million for amortization of the actuarial loss and $0.1 million of prior service cost amortization. For the Other Plans it is expected that net periodic pension cost in 2015, included in accumulated other comprehensive income at December 31, 2014, will include $1.5 million for amortization of the actuarial loss and less than ($0.1) million of prior service cost (credit) amortization.
Level 3 - Inputs are unobservable and require management's judgment about the assumptions that market participants would use in pricing the assets.
Shares of Class A common stock available for grant as additional awards under the Class A Common Stock Compensation Plan totaled 3,430,142 at December 31, 2014.
We are licensed by the IFBF to use the "Farm Bureau" and "FB" designations in Iowa. In connection with this license, we incurred royalty expense totaling $0.5 million in 2014, 2013 and 2012. We have similar arrangements with other state Farm Bureau organizations in our market territory. Total royalty expense to Farm Bureau organizations other than the IFBF totaled $1.7 million in 2014, $1.8 million in 2013 and $1.4 million in 2012. The royalty agreement with the IFBF provides them an option to terminate the agreement when the quarterly common stock dividend is below $0.10 per share.
Farm Bureau Life's ability to pay dividends to the parent company is restricted by the Iowa Insurance Holding Company Act to earned surplus arising from its business as of the date the dividend is paid. In addition, prior approval of the Iowa Insurance Commissioner is required for a dividend distribution of cash or other property whose fair value, together with that of other dividends made within the preceding 12 months, exceeds the greater of (i) 10% of policyholders' surplus as of the preceding year end, or (ii) the statutory net gain from operations of the insurer for the preceding calendar year. As shown in the tables above, at December 31, 2014, Farm Bureau Life’s net gain from operations, exceeded 10% of statutory surplus, therefore, the maximum amount available for distribution to FBL Financial Group, Inc. from Farm Bureau Life without regulatory approval during 2015 is $97.8 million. However, due to the timing of a $45.0 million dividend paid by Farm Bureau Life on December 18, 2014, the maximum dividend available to be paid without further regulatory approval until December 19, 2015 is $52.8 million.