Show data table
| 1999 | 28.4% | 2009 | 26.3% | 2019 | 19.3% |
| 2000 | 27.3% | 2010 | 23.9% | 2020 | 18.2% |
| 2001 | 26.8% | 2011 | 20.9% | 2021 | 18.6% |
| 2002 | 24.2% | 2012 | 19.7% | 2022 | 19.2% |
| 2003 | 24.9% | 2013 | 20.6% | 2023 | 17% |
| 2004 | 24.4% | 2014 | 23.2% | 2024 | 15.8% |
| 2005 | 23.6% | 2015 | 20.9% | 2025 | 16.1% |
| 2006 | 27.2% | 2016 | 19.2% | 2026 | 16.6% |
| 2007 | 26.4% | 2017 | 20.7% | | |
| 2008 | 26.6% | 2018 | 19.7% | | |
Show data table
| 1999 | 91.8B | 2009 | 289B | 2019 | 1.08T |
| 2000 | 97.7B | 2010 | 303B | 2020 | 1.12T |
| 2001 | 101B | 2011 | 302B | 2021 | 1.24T |
| 2002 | 96.2B | 2012 | 349B | 2022 | 1.51T |
| 2003 | 109B | 2013 | 404B | 2023 | 1.72T |
| 2004 | 124B | 2014 | 519B | 2024 | 2.2T |
| 2005 | 134B | 2015 | 538B | 2025 | 2.92T |
| 2006 | 177B | 2016 | 549B | 2026 | 3.54T |
| 2007 | 206B | 2017 | 755B | | |
| 2008 | 251B | 2018 | 917B | | |
Show data table
| 1999 | 26.3% | 2009 | 32.5% | 2019 | 26.9% |
| 2000 | 26% | 2010 | 31.4% | 2020 | 25.7% |
| 2001 | 27.9% | 2011 | 30.5% | 2021 | 25.5% |
| 2002 | 30.9% | 2012 | 29.2% | 2022 | 24.9% |
| 2003 | 30.6% | 2013 | 32.9% | 2023 | 22.7% |
| 2004 | 30.1% | 2014 | 33.9% | 2024 | 22.9% |
| 2005 | 30.3% | 2015 | 31.3% | 2025 | 22.7% |
| 2006 | 34.5% | 2016 | 31% | 2026 | 28.8% |
| 2007 | 31.3% | 2017 | 30.6% | | |
| 2008 | 32.7% | 2018 | 28.6% | | |
Show data table
| 1999 | 84.9B | 2009 | 356B | 2019 | 1.51T |
| 2000 | 93B | 2010 | 398B | 2020 | 1.58T |
| 2001 | 105B | 2011 | 440B | 2021 | 1.7T |
| 2002 | 123B | 2012 | 516B | 2022 | 1.96T |
| 2003 | 134B | 2013 | 644B | 2023 | 2.31T |
| 2004 | 154B | 2014 | 760B | 2024 | 3.19T |
| 2005 | 172B | 2015 | 806B | 2025 | 4.11T |
| 2006 | 224B | 2016 | 887B | 2026 | 6.12T |
| 2007 | 245B | 2017 | 1.12T | | |
| 2008 | 308B | 2018 | 1.34T | | |