Assumptions used to determine net periodic benefit costs for the fiscal years ended March 31 were as  follows: To develop the expected long-term rate of return on assets assumption, the company considered the  current level of expected returns on various asset classes. The expected return for each asset class was  then weighted based on the target asset allocation to develop the expected return on plan assets  assumption for the portfolio. Based upon the assumptions used to measure the company’s qualified pension and postretirement benefit  obligation at March 31, 2010, including pension and postretirement benefits attributable to estimated future  employee service, the company expects that benefits to be paid over the next ten years will be as follows:  The assumed health care cost trend rate used in measuring the accumulated postretirement benefit  obligation at March 31, 2010 was 10% for pre-65 medical and prescription drug coverage and 7% for post- 65 medical coverage; gradually declining to 4.5% in the year 2029. The assumed health care cost trend rate  used in measuring the net periodic postretirement benefit cost for the year ended March 31, 2010 was 10%  for pre-65 medical and prescription drug coverage and 7% for post-65 medical coverage; gradually declining  to 4.5% in the year 2029. The health care cost trend rate used in measuring the net periodic postretirement  benefit cost for fiscal 2011 is expected to be 9.5% for pre-65 medical and prescription drug coverage and  7% for post-65 medical coverage. A 1% increase in the assumed health care cost trend rates for each year  would increase the accumulated postretirement benefit obligation by approximately $3.6 million at March 31, 2010 and increase the total of service and interest cost for the year ended March 31, 2010 by  $0.4 million. A 1% decrease in the assumed health care cost trend rates for each year would decrease the  accumulated postretirement benefit obligation by approximately $3.0 million at March 31, 2010 and  decrease the total of service and interest cost for the year ended March 31, 2010 by $0.3 million. Upon meeting various citizenship, age and service requirements, employees are eligible to participate in a  defined contribution savings plan and can contribute from 2% to 75% of their base salary to an employee  benefit trust. The company matches with company common stock 50% of the first 6% of eligible  compensation deferred by the employee. The plan held 264,194 shares and 263,458 shares of the  company's common stock at March 31, 2010 and 2009, respectively. Amounts charged to expense for the  plan for 2010, 2009 and 2008 were $1.6 million, $1.9 million and $2.0 million, respectively. Forfeitures  totaling approximately $0.2 million, $0.2 million and $0.1 million reduced the costs of the plan for fiscal 2010,  2009 and 2008, respectively.  A non-qualified supplemental savings plan is provided to executive officers and designated employees who  have the opportunity to defer up to 50% of their eligible compensation that cannot be deferred under the  existing 401(k) plan due to IRS limitations. A company match is provided on these contributions equal to  50% of the first 6% of eligible compensation deferred by the employee. The plan also allows participants to  F-25 Defined Contribution Plans  (In thousands)  Pension  Other Year ending March 31,  Benefits  Benefits  2011  $ 4,289 1,702 2012  4,677 1,822 2013  4,987 1,956 2014  5,580 2,017 2015  5,849 2,128 2016 – 2020  31,090 11,814 Total 10-year estimated future benefit payments  $  56,472  21,439  Pension Benefits Other Benefits 2010 2009 2008 2010 2009 2008 Discount rate 7.25% 6.25% 5.75% 7.25% 6.25% 5.75% Expected long-term rate of return on assets  5.75%  6.00%  6.25%  N/A  N/A  N/A  Rates of annual increase in compensation levels  3.00%  3.00%  3.00%  N/A  N/A  N/A  TIDEWATER INC. NOTES TO CONSOLIDATED FINANCIAL STATEMENTS Years ended March 31, 2010, 2009, and 2008 