15. Earnings per share

Earnings per share are calculated as follows:

Net profit€/000(6,528) 42,074
Earnings attributable to ordinary shares€/000(6,528)42,074 42,074
Average number of ordinary shares in circulation 359,877,159 363,015,833
Earnings per ordinary share(0.018)0.116
Adjusted average number of ordinary shares 360,502,825 363,570,251
Diluted earnings per ordinary share(0.018)0.116

The potential effects deriving from stock option plans were considered when calculating diluted earnings per share.