| Period | Value | YoY Chg | Change % | Date | Report | Filed |
|---|---|---|---|---|---|---|
| Q4 2023 | $338M | +$13.7M | +4.23% | Dec 31, 2023 | 20-F | 2024-03-27 |
| Q4 2022 | $324M | -$25.5M | -7.31% | Dec 31, 2022 | 20-F | 2024-03-27 |
| Q4 2021 | $349M | -$8.76M | -2.45% | Dec 31, 2021 | 20-F | 2023-04-24 |
| Q2 2021 | $355M | +$14M | +4.11% | Jun 30, 2021 | 6-K | 2021-09-13 |
| Q4 2020 | $358M | +$114M | +46.6% | Dec 31, 2020 | 20-F | 2022-04-28 |
| Q2 2020 | $341M | Jun 30, 2020 | 6-K | 2020-09-09 | ||
| Q4 2019 | $244M | +$65M | +36.2% | Dec 31, 2019 | 20-F | 2021-04-27 |
| Q4 2018 | $179M | +$8.43M | +4.93% | Dec 31, 2018 | 20-F | 2020-02-25 |
| Q4 2017 | $171M | -$16M | -8.58% | Dec 31, 2017 | 20-F | 2019-03-19 |
| Q4 2016 | $187M | -$2.84M | -1.5% | Dec 31, 2016 | 20-F | 2018-03-26 |
| Q4 2015 | $190M | -$10.6M | -5.27% | Dec 31, 2015 | 20-F | 2017-03-20 |
| Q2 2015 | $189M | -$19.9M | -9.54% | Jun 30, 2015 | 6-K | 2015-09-25 |
| Q4 2014 | $200M | +$26.1M | +15% | Dec 31, 2014 | 20-F | 2016-03-29 |
| Q2 2014 | $209M | Jun 30, 2014 | 6-K | 2014-08-27 | ||
| Q4 2013 | $174M | +$8.52M | +5.14% | Dec 31, 2013 | 20-F | 2015-03-24 |
| Q3 2013 | $172M | Sep 30, 2013 | 6-K | 2014-01-06 | ||
| Q4 2012 | $166M | -$26.9M | -14% | Dec 31, 2012 | 20-F | 2014-03-26 |
| Q4 2011 | $193M | +$19M | +11% | Dec 31, 2011 | 20-F | 2013-04-11 |
| Q4 2010 | $174M | Dec 31, 2010 | 20-F | 2012-04-19 |