Show data table
| 2000 | 19.6% | 2009 | 19.9% | 2018 | 19% |
| 2001 | 18.8% | 2010 | 21% | 2019 | 19.5% |
| 2002 | 18.2% | 2011 | 21.8% | 2020 | 17.5% |
| 2003 | 18.5% | 2012 | 22.4% | 2021 | 20.6% |
| 2004 | 18.5% | 2013 | 22.2% | 2022 | 21.7% |
| 2005 | 19.9% | 2014 | 22.2% | 2023 | 19.3% |
| 2006 | 21.2% | 2015 | 20% | 2024 | 18.7% |
| 2007 | 21.9% | 2016 | 18.4% | 2025 | 19.1% |
| 2008 | 22.4% | 2017 | 17.8% | 2026 | 19.4% |
Show data table
| 2000 | 34.5B | 2009 | 73.1B | 2018 | 144B |
| 2001 | 33.6B | 2010 | 88.5B | 2019 | 153B |
| 2002 | 34.6B | 2011 | 103B | 2020 | 128B |
| 2003 | 37.7B | 2012 | 114B | 2021 | 184B |
| 2004 | 41.8B | 2013 | 122B | 2022 | 207B |
| 2005 | 48.8B | 2014 | 129B | 2023 | 197B |
| 2006 | 60.7B | 2015 | 124B | 2024 | 207B |
| 2007 | 70.1B | 2016 | 123B | 2025 | 231B |
| 2008 | 79.1B | 2017 | 128B | 2026 | 257B |
Show data table
| 2000 | 21.7% | 2009 | 21.3% | 2018 | 21% |
| 2001 | 20.9% | 2010 | 21% | 2019 | 20.8% |
| 2002 | 19.6% | 2011 | 19.8% | 2020 | 25.7% |
| 2003 | 20.1% | 2012 | 20.3% | 2021 | 23.1% |
| 2004 | 19.6% | 2013 | 21.5% | 2022 | 23.1% |
| 2005 | 20.4% | 2014 | 22.4% | 2023 | 22.1% |
| 2006 | 19.2% | 2015 | 22% | 2024 | 22.2% |
| 2007 | 18.6% | 2016 | 20.5% | 2025 | 21.4% |
| 2008 | 19.9% | 2017 | 20.6% | 2026 | 21.3% |
Show data table
| 2000 | 38.2B | 2009 | 78.6B | 2018 | 158B |
| 2001 | 37.5B | 2010 | 88.6B | 2019 | 164B |
| 2002 | 37.3B | 2011 | 93B | 2020 | 188B |
| 2003 | 41B | 2012 | 103B | 2021 | 206B |
| 2004 | 44.1B | 2013 | 118B | 2022 | 220B |
| 2005 | 49.9B | 2014 | 130B | 2023 | 225B |
| 2006 | 54.9B | 2015 | 136B | 2024 | 246B |
| 2007 | 59.4B | 2016 | 138B | 2025 | 259B |
| 2008 | 70.4B | 2017 | 148B | 2026 | 283B |