| Thousand deferred shares | 2017 | 2016 | 2015 | |||||||||
Deferred shares outstanding at January 1 st | 19,260 | 19,056 | 17,490 | |||||||||
| New deferred shares during the period | 794 | 7,329 | 2,692 | |||||||||
| Deferred shares granted during the period | (2,874 | ) | (6,118 | ) | (804 | ) | ||||||
| Deferred shares forfeited during the period | (880 | ) | (1,007 | ) | (322 | ) | ||||||
| Deferred shares outstanding at ended year | 16,300 | 19,260 | 19,056 | |||||||||