Show data table
| 1998 | 53.5% | 2008 | 44.5% | 2018 | 42.1% |
| 1999 | 54.7% | 2009 | 43.6% | 2019 | 41.3% |
| 2000 | 51.5% | 2010 | 44.6% | 2020 | 40.9% |
| 2001 | 46.8% | 2011 | 43.7% | 2021 | 40.5% |
| 2002 | 44.4% | 2012 | 44.2% | 2022 | 39.5% |
| 2003 | 46.8% | 2013 | 41.6% | 2023 | 40.2% |
| 2004 | 45.4% | 2014 | 43.3% | 2024 | 41.3% |
| 2005 | 45.3% | 2015 | 42.5% | 2025 | 42.5% |
| 2006 | 46.3% | 2016 | 41.8% | 2026 | 41.4% |
| 2007 | 45.4% | 2017 | 41.8% | | |
Show data table
| 1998 | 4.93B | 2008 | 11.4B | 2018 | 14.3B |
| 1999 | 5.79B | 2009 | 10.8B | 2019 | 14.8B |
| 2000 | 6.09B | 2010 | 11.3B | 2020 | 14.2B |
| 2001 | 5.93B | 2011 | 11.5B | 2021 | 15.8B |
| 2002 | 6.22B | 2012 | 11.6B | 2022 | 18B |
| 2003 | 6.9B | 2013 | 11.1B | 2023 | 20.1B |
| 2004 | 7.26B | 2014 | 11.8B | 2024 | 22.2B |
| 2005 | 7.99B | 2015 | 12.3B | 2025 | 24.2B |
| 2006 | 9.29B | 2016 | 12.7B | 2026 | 25.2B |
| 2007 | 10.2B | 2017 | 13.3B | | |
Show data table
| 1998 | 54.4% | 2008 | 48.4% | 2018 | 40.4% |
| 1999 | 57.5% | 2009 | 49% | 2019 | 39.9% |
| 2000 | 56.2% | 2010 | 48.7% | 2020 | 45.4% |
| 2001 | 50.2% | 2011 | 46.4% | 2021 | 40.6% |
| 2002 | 47.4% | 2012 | 47.9% | 2022 | 39.4% |
| 2003 | 47.3% | 2013 | 43.8% | 2023 | 41.9% |
| 2004 | 45.6% | 2014 | 46.2% | 2024 | 43.3% |
| 2005 | 44.5% | 2015 | 42.7% | 2025 | 44.9% |
| 2006 | 44.2% | 2016 | 41.5% | 2026 | 45.3% |
| 2007 | 45.2% | 2017 | 40% | | |
Show data table
| 1998 | 5.02B | 2008 | 12.3B | 2018 | 13.7B |
| 1999 | 6.08B | 2009 | 12.1B | 2019 | 14.3B |
| 2000 | 6.64B | 2010 | 12.3B | 2020 | 15.8B |
| 2001 | 6.37B | 2011 | 12.2B | 2021 | 15.9B |
| 2002 | 6.63B | 2012 | 12.6B | 2022 | 18B |
| 2003 | 6.96B | 2013 | 11.7B | 2023 | 20.9B |
| 2004 | 7.29B | 2014 | 12.6B | 2024 | 23.2B |
| 2005 | 7.86B | 2015 | 12.3B | 2025 | 25.6B |
| 2006 | 8.87B | 2016 | 12.5B | 2026 | 27.7B |
| 2007 | 10.2B | 2017 | 12.7B | | |