(a) Basic
Basic earnings per share are calculated by dividing the income attributable to the shareholders of the Company by the weighted average number of shares issued during the period.
| 2017 | 2016 | 2015 | ||||
| Income attributable to shareholders of the Company |
1,234,507 |
750,427 |
2,085,442 | |||
| Weighted average number of common shares issued (thousands) |
2,420,016 |
2,420,237 |
2,420,237 | |||
| Basic earnings per share (expressed in R$) | 0.51 | 0.31 | 0.86 |
(b) Diluted
Diluted earnings per share are calculated by adjusting the weighted average number of shares outstanding to assume the conversion of all dilutive potential shares.
| 2017 | 2016 | 2015 | ||||
| Income attributable to shareholders of the Company |
1,234,507 |
750,427 |
2,085,442 | |||
| Weighted average number of common shares issued (thousands) |
2,241,072 |
2,420,241 |
2,420,325 | |||
| Diluted earnings per share (expressed in R$) | 0.51 | 0.31 | 0.86 |
The calculation of the diluted earnings per share considered 1,056 thousand shares (4.53 thousand shares in 2016) related to the 2nd and 3rd Grantings of Plan 2011-2013, and the 2nd and 3rd grantings of the 2014-2016 Plan, as mentioned in Note 26.