Show data table
| 1999 | 24.5% | 2009 | 25.8% | 2019 | 27.9% |
| 2000 | 23.8% | 2010 | 27% | 2020 | 28.2% |
| 2001 | 25% | 2011 | 26% | 2021 | 27.6% |
| 2002 | 24.4% | 2012 | 25.5% | 2022 | 27.2% |
| 2003 | 25.5% | 2013 | 27.1% | 2023 | 27% |
| 2004 | 25.7% | 2014 | 26.5% | 2024 | 27.5% |
| 2005 | 26% | 2015 | 26.5% | 2025 | 28.1% |
| 2006 | 26.2% | 2016 | 27% | 2026 | 28.1% |
| 2007 | 26.6% | 2017 | 27.2% | | |
| 2008 | 25% | 2018 | 28.5% | | |
Show data table
| 1999 | 72.6B | 2009 | 201B | 2019 | 611B |
| 2000 | 71.7B | 2010 | 238B | 2020 | 633B |
| 2001 | 75.8B | 2011 | 263B | 2021 | 730B |
| 2002 | 77B | 2012 | 290B | 2022 | 799B |
| 2003 | 94.7B | 2013 | 348B | 2023 | 829B |
| 2004 | 110B | 2014 | 385B | 2024 | 909B |
| 2005 | 121B | 2015 | 421B | 2025 | 989B |
| 2006 | 135B | 2016 | 468B | 2026 | 1.06T |
| 2007 | 159B | 2017 | 507B | | |
| 2008 | 173B | 2018 | 571B | | |
Show data table
| 1999 | 27.2% | 2009 | 27.2% | 2019 | 30.6% |
| 2000 | 26.6% | 2010 | 27.4% | 2020 | 32.8% |
| 2001 | 27.8% | 2011 | 26.3% | 2021 | 30.2% |
| 2002 | 27.6% | 2012 | 27.7% | 2022 | 29.7% |
| 2003 | 27.7% | 2013 | 28.8% | 2023 | 30.1% |
| 2004 | 26.6% | 2014 | 29.1% | 2024 | 30.6% |
| 2005 | 26.3% | 2015 | 28.4% | 2025 | 31.5% |
| 2006 | 26.8% | 2016 | 29.7% | 2026 | 31.8% |
| 2007 | 26.8% | 2017 | 29.7% | | |
| 2008 | 26.3% | 2018 | 30.3% | | |
Show data table
| 1999 | 80.8B | 2009 | 212B | 2019 | 671B |
| 2000 | 80B | 2010 | 242B | 2020 | 738B |
| 2001 | 84.5B | 2011 | 266B | 2021 | 799B |
| 2002 | 87.1B | 2012 | 314B | 2022 | 872B |
| 2003 | 103B | 2013 | 371B | 2023 | 924B |
| 2004 | 114B | 2014 | 422B | 2024 | 1.01T |
| 2005 | 122B | 2015 | 450B | 2025 | 1.11T |
| 2006 | 138B | 2016 | 514B | 2026 | 1.2T |
| 2007 | 160B | 2017 | 554B | | |
| 2008 | 182B | 2018 | 609B | | |