| Period | Value | YoY Chg | Change % | Date | Report | Filed |
|---|---|---|---|---|---|---|
| Q4 2023 | $496M | +$29M | +6.21% | Dec 31, 2023 | 20-F | 2024-02-23 |
| Q4 2022 | $467M | -$76M | -14% | Dec 31, 2022 | 20-F | 2024-02-23 |
| Q4 2021 | $543M | +$39M | +7.74% | Dec 31, 2021 | 20-F | 2023-02-24 |
| Q4 2020 | $504M | -$27M | -5.09% | Dec 31, 2020 | 20-F | 2022-02-25 |
| Q4 2019 | $531M | +$62M | +13.2% | Dec 31, 2019 | 20-F | 2021-02-26 |
| Q4 2018 | $469M | -$102M | -17.9% | Dec 31, 2018 | 20-F | 2020-02-26 |
| Q4 2017 | $571M | +$39M | +7.33% | Dec 31, 2017 | 20-F | 2019-03-28 |
| Q4 2016 | $532M | -$111M | -17.3% | Dec 31, 2016 | 20-F | 2018-02-23 |
| Q4 2015 | $643M | -$58M | -8.27% | Dec 31, 2015 | 20-F | 2017-03-13 |
| Q4 2014 | $701M | -$57M | -7.52% | Dec 31, 2014 | 20-F | 2016-02-25 |
| Q4 2013 | $758M | -$18M | -2.32% | Dec 31, 2013 | 20-F | 2015-03-05 |
| Q4 2012 | $776M | -$28M | -3.48% | Dec 31, 2012 | 20-F/A | 2014-03-07 |
| Q4 2011 | $804M | +$37M | +4.82% | Dec 31, 2011 | 20-F | 2013-03-14 |
| Q4 2010 | $767M | Dec 31, 2010 | 20-F | 2012-03-15 |