The plan assets are comprised of the following:
| December 31, 2017 | December 31, 2016 | |||||||||||||||
| Amount | % | Amount | % | |||||||||||||
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Fixed income bonds |
408,347 | 93.95 | 364,659 | 93.95 | ||||||||||||
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Variable-income securities |
3,411 | 5.00 | 19,407 | 5.00 | ||||||||||||
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Other |
4,159 | 1.05 | 4,075 | 1.05 | ||||||||||||
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| 415,917 | 100.00 | 388,141 | 100.00 | |||||||||||||
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