| Period | Value | YoY Chg | Change % | Date | Report | Filed |
|---|---|---|---|---|---|---|
| Q2 2019 | 555B | +53.5B | +10.7% | 30 Jun 2019 | 6-K | 14 Aug 2019 |
| Q4 2018 | 509B | +14.7B | +2.98% | 31 Dec 2018 | 20-F | 22 Mar 2019 |
| Q2 2018 | 501B | 30 Jun 2018 | 6-K | 08 Aug 2018 | ||
| Q4 2017 | 494B | +23.4B | +4.98% | 31 Dec 2017 | 20-F | 22 Mar 2019 |
| Q4 2016 | 470B | 31 Dec 2016 | 20-F/A | 28 Mar 2018 |