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| Year ended December 31 | |||||
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| ($ Millions) | 2007 | 2006 as restated – see Note 13 |
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| CHANGES IN DEFICIT | |||||
| Deficit, beginning of year | $ | (603) | $ | (896) | |
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| Increase in net assets available for benefits | 2,088 | 3,402 | |||
| Change in actuarial asset value adjustment | 1,059 | (1,050) | |||
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| Increase in actuarial value of net assets available for benefits | 3,147 | 2,352 | |||
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| Net increase in accrued pension benefits | (2,875) | (2,059) | |||
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| Deficit, end of year | $ | (331) | $ | (603) | |
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| See Description of Plan and accompanying notes to financial statements | |||||
