| Period | Value | YoY Chg | Change % | Date | Report | Filed |
|---|---|---|---|---|---|---|
| Q4 2023 | -$69.9M | +$3.71M | +5.04% | Dec 31, 2023 | 20-F | 2024-04-02 |
| Q4 2022 | -$73.6M | -$2.26M | -3.16% | Dec 31, 2022 | 20-F | 2024-04-02 |
| Q4 2021 | -$71.4M | -$5.26M | -7.96% | Dec 31, 2021 | 20-F | 2023-03-30 |
| Q4 2020 | -$66.1M | -$3.99M | -6.43% | Dec 31, 2020 | 20-F | 2022-03-29 |
| Q4 2019 | -$62.1M | -$6.83M | -12.4% | Dec 31, 2019 | 20-F | 2021-03-25 |
| Q2 2019 | -$59.4M | -$7.57M | -14.6% | Jun 30, 2019 | 6-K | 2019-09-12 |
| Q4 2018 | -$55.3M | -$2.08M | -3.91% | Dec 31, 2018 | 20-F | 2020-03-31 |
| Q2 2018 | -$51.8M | +$4.86M | +8.58% | Jun 30, 2018 | 6-K | 2018-09-13 |
| Q4 2017 | -$53.2M | +$2.9M | +5.17% | Dec 31, 2017 | 20-F | 2019-04-18 |
| Q2 2017 | -$56.6M | -$1.28M | -2.3% | Jun 30, 2017 | 6-K | 2017-08-23 |
| Q4 2016 | -$56.1M | +$1.92M | +3.3% | Dec 31, 2016 | 20-F | 2018-03-28 |
| Q2 2016 | -$55.4M | +$1.09M | +1.93% | Jun 30, 2016 | 6-K | 2016-08-29 |
| Q1 2016 | -$57.1M | Mar 31, 2016 | 6-K | 2016-05-16 | ||
| Q4 2015 | -$58M | -$923K | -1.62% | Dec 31, 2015 | 20-F | 2017-03-30 |
| Q2 2015 | -$56.5M | +$1.05M | +1.82% | Jun 30, 2015 | 6-K | 2015-09-09 |
| Q4 2014 | -$57.1M | +$726K | +1.26% | Dec 31, 2014 | 20-F | 2016-03-29 |
| Q2 2014 | -$57.5M | -$713K | -1.26% | Jun 30, 2014 | 6-K | 2014-09-17 |
| Q4 2013 | -$57.8M | -$1.42M | -2.52% | Dec 31, 2013 | 20-F | 2015-03-26 |
| Q2 2013 | -$56.8M | Jun 30, 2013 | 6-K | 2013-09-03 | ||
| Q4 2012 | -$56.4M | -$5.99M | -11.9% | Dec 31, 2012 | 20-F | 2014-03-26 |
| Q4 2011 | -$50.4M | -$1.9M | -3.93% | Dec 31, 2011 | 20-F | 2013-04-22 |
| Q4 2010 | -$48.5M | Dec 31, 2010 | 20-F | 2012-03-29 |