|
|
|
Class A shares |
|
Class B shares |
|
|
|
|
|
|
|
|
|
Balance at 1 January 2016 |
|
426,129,798 |
|
257,386,540 |
|
|
(Acquisition) / disposal of treasury stock (note 15 (d)) |
|
— |
|
(692,165 |
) |
|
|
|
|
|
|
|
|
Balance at 31 December 2016 |
|
426,129,798 |
|
256,694,375 |
|
|
|
|
|
|
|
|
|
|
|
Class A shares |
|
Class B shares |
|
|
|
|
|
|
|
|
|
Balance at 1 January 2017 |
|
426,129,798 |
|
256,694,375 |
|
|
(Acquisition) / disposal of treasury stock (note 15 (d)) |
|
— |
|
432,929 |
|
|
|
|
|
|
|
|
|
Balance at 31 December 2017 |
|
426,129,798 |
|
257,127,304 |
|
|
|
|
|
|
|
|