Show data table
| 2000 | 17% | 2009 | 21.2% | 2018 | 21.8% |
| 2001 | 16.2% | 2010 | 20.2% | 2019 | 22.1% |
| 2002 | 17.1% | 2011 | 20.1% | 2020 | 21.6% |
| 2003 | 17.6% | 2012 | 20.1% | 2021 | 24.2% |
| 2004 | 17.7% | 2013 | 20.1% | 2022 | 24.5% |
| 2005 | 17.6% | 2014 | 19.4% | 2023 | 24% |
| 2006 | 16.8% | 2015 | 20.2% | 2024 | 25.8% |
| 2007 | 17.4% | 2016 | 20.6% | 2025 | 27.7% |
| 2008 | 19.8% | 2017 | 22% | 2026 | 28.2% |
Show data table
| 2000 | 23.1B | 2009 | 64.3B | 2018 | 111B |
| 2001 | 24B | 2010 | 65.5B | 2019 | 104B |
| 2002 | 27.8B | 2011 | 69.2B | 2020 | 98.7B |
| 2003 | 32B | 2012 | 73.8B | 2021 | 126B |
| 2004 | 34.9B | 2013 | 78.2B | 2022 | 148B |
| 2005 | 37.6B | 2014 | 79.7B | 2023 | 161B |
| 2006 | 40.7B | 2015 | 87.8B | 2024 | 186B |
| 2007 | 47.7B | 2016 | 94.7B | 2025 | 214B |
| 2008 | 57.7B | 2017 | 107B | 2026 | 234B |
Show data table
| 1999 | 25.9% | 2009 | 24.5% | 2019 | 30.2% |
| 2000 | 21.2% | 2010 | 23.2% | 2020 | 32.1% |
| 2001 | 21.5% | 2011 | 23% | 2021 | 28.3% |
| 2002 | 22% | 2012 | 21.9% | 2022 | 27.6% |
| 2003 | 22.2% | 2013 | 23.4% | 2023 | 28.5% |
| 2004 | 21.9% | 2014 | 22.5% | 2024 | 32.6% |
| 2005 | 21.8% | 2015 | 23.7% | 2025 | 31.4% |
| 2006 | 20.7% | 2016 | 23.3% | 2026 | 31.3% |
| 2007 | 20.4% | 2017 | 23.6% | | |
| 2008 | 22.4% | 2018 | 23.9% | | |
Show data table
| 1990 | 12.3B | 2003 | 40.3B | 2016 | 107B |
| 1991 | 12.8B | 2004 | 43.2B | 2017 | 115B |
| 1992 | 14.2B | 2005 | 46.6B | 2018 | 122B |
| 1993 | 15.1B | 2006 | 50.1B | 2019 | 142B |
| 1994 | 19.2B | 2007 | 55.7B | 2020 | 146B |
| 1995 | 21.1B | 2008 | 65.4B | 2021 | 148B |
| 1996 | 22.6B | 2009 | 74.4B | 2022 | 167B |
| 1997 | 25B | 2010 | 75B | 2023 | 191B |
| 1998 | 27.8B | 2011 | 79.6B | 2024 | 235B |
| 1999 | 31.8B | 2012 | 80.1B | 2025 | 243B |
| 2000 | 28.8B | 2013 | 91B | 2026 | 260B |
| 2001 | 31.9B | 2014 | 92.2B | | |
| 2002 | 35.7B | 2015 | 103B | | |