Show data table
| 1997 | 84.2% | 2007 | 53.5% | 2017 | 32.6% |
| 1998 | 75.2% | 2008 | 51.2% | 2018 | 35.3% |
| 1999 | 78% | 2009 | 46.5% | 2019 | 37.2% |
| 2000 | 74% | 2010 | 45.6% | 2020 | 46.3% |
| 2001 | 71.2% | 2011 | 50% | 2021 | 50.2% |
| 2002 | 63% | 2012 | 24.7% | 2022 | 56% |
| 2003 | 56.4% | 2013 | 24.6% | 2023 | 56.7% |
| 2004 | 56.7% | 2014 | 26.7% | 2024 | 59.5% |
| 2005 | 58.2% | 2015 | 29.2% | 2025 | 56.3% |
| 2006 | 57.5% | 2016 | 31.1% | 2026 | 55.1% |
Show data table
| 1997 | 7.96T | 2007 | 7.21T | 2017 | 9.94T |
| 1998 | 7.73T | 2008 | 7.68T | 2018 | 11.48T |
| 1999 | 8.22T | 2009 | 7.36T | 2019 | 13.17T |
| 2000 | 7.8T | 2010 | 7.77T | 2020 | 16.8T |
| 2001 | 8.07T | 2011 | 8.38T | 2021 | 20.25T |
| 2002 | 7.49T | 2012 | 4.67T | 2022 | 24.79T |
| 2003 | 6.93T | 2013 | 5.26T | 2023 | 27.78T |
| 2004 | 6.86T | 2014 | 6.45T | 2024 | 31.41T |
| 2005 | 7.25T | 2015 | 7.9T | 2025 | 32.35T |
| 2006 | 7.39T | 2016 | 8.93T | 2026 | 34.34T |