18 DEFERRED INCOME
Deferred income mainly relates to cash received from research collaboration agreements prior to completion of the earnings process.
| As at December 31, | ||||||||||||
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€ in thousands |
2017 | 2016 | 2015 | |||||||||
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Within 1 year |
21,905 | 22,118 | 55,738 | |||||||||
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In the second to the fifth year |
10,791 | 11,504 | 30,385 | |||||||||
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Total deferred income* |
32,696 | 33,622 | 86,123 | |||||||||
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