Show data table
| 2000 | 21.3% | 2009 | 23.8% | 2018 | 26.4% |
| 2001 | 21.6% | 2010 | 23.8% | 2019 | 26.3% |
| 2002 | 21.3% | 2011 | 24.4% | 2020 | 25% |
| 2003 | 21% | 2012 | 24.6% | 2021 | 27.1% |
| 2004 | 21.7% | 2013 | 25% | 2022 | 27.6% |
| 2005 | 25% | 2014 | 25.4% | 2023 | 26.9% |
| 2006 | 25.5% | 2015 | 25.8% | 2024 | 27.3% |
| 2007 | 25.6% | 2016 | 26.2% | 2025 | 28.4% |
| 2008 | 25.5% | 2017 | 25.8% | 2026 | 28.5% |
Show data table
| 2000 | 224B | 2009 | 665B | 2018 | 1.42T |
| 2001 | 252B | 2010 | 728B | 2019 | 1.48T |
| 2002 | 289B | 2011 | 811B | 2020 | 1.39T |
| 2003 | 313B | 2012 | 877B | 2021 | 1.68T |
| 2004 | 358B | 2013 | 967B | 2022 | 1.84T |
| 2005 | 460B | 2014 | 1.05T | 2023 | 1.89T |
| 2006 | 524B | 2015 | 1.14T | 2024 | 2.01T |
| 2007 | 602B | 2016 | 1.25T | 2025 | 2.17T |
| 2008 | 667B | 2017 | 1.31T | 2026 | 2.28T |
Show data table
| 2000 | 22.6% | 2009 | 28.5% | 2018 | 30.2% |
| 2001 | 22.6% | 2010 | 28.3% | 2019 | 31.4% |
| 2002 | 22.2% | 2011 | 28.1% | 2020 | 34.6% |
| 2003 | 22.6% | 2012 | 28.6% | 2021 | 32.7% |
| 2004 | 22.7% | 2013 | 28.9% | 2022 | 31.9% |
| 2005 | 25.1% | 2014 | 29.3% | 2023 | 32.5% |
| 2006 | 24.7% | 2015 | 30.2% | 2024 | 33% |
| 2007 | 24.4% | 2016 | 29.9% | 2025 | 34.2% |
| 2008 | 26% | 2017 | 29.9% | 2026 | 33.3% |
Show data table
| 2000 | 238B | 2009 | 795B | 2018 | 1.62T |
| 2001 | 264B | 2010 | 866B | 2019 | 1.77T |
| 2002 | 302B | 2011 | 934B | 2020 | 1.93T |
| 2003 | 337B | 2012 | 1.02T | 2021 | 2.03T |
| 2004 | 375B | 2013 | 1.12T | 2022 | 2.13T |
| 2005 | 462B | 2014 | 1.21T | 2023 | 2.29T |
| 2006 | 508B | 2015 | 1.33T | 2024 | 2.42T |
| 2007 | 573B | 2016 | 1.42T | 2025 | 2.61T |
| 2008 | 679B | 2017 | 1.52T | 2026 | 2.67T |