Show data table
| 1990 | 16.7% | 2003 | 22.4% | 2016 | 28.8% |
| 1991 | 39.9% | 2004 | 24.1% | 2017 | 27.1% |
| 1992 | 32.9% | 2005 | 31.7% | 2018 | 29.5% |
| 1993 | 28.6% | 2006 | 35.8% | 2019 | 29.9% |
| 1994 | 28.3% | 2007 | 34.8% | 2020 | 28% |
| 1995 | 29.7% | 2008 | 39.6% | 2021 | 29.9% |
| 1996 | 28.5% | 2009 | 28.9% | 2022 | 32.5% |
| 1997 | 29.3% | 2010 | 30.9% | 2023 | 28.5% |
| 1998 | 26.8% | 2011 | 34.7% | 2024 | 27.8% |
| 1999 | 25.6% | 2012 | 36.4% | 2025 | 27.7% |
| 2000 | 32.4% | 2013 | 36.9% | 2026 | 27.4% |
| 2001 | 26.4% | 2014 | 33.2% | | |
| 2002 | 20.1% | 2015 | 20.1% | | |
Show data table
| 1990 | 29.8B | 2003 | 102B | 2016 | 403B |
| 1991 | 72.1B | 2004 | 131B | 2017 | 401B |
| 1992 | 62.7B | 2005 | 210B | 2018 | 478B |
| 1993 | 54.8B | 2006 | 292B | 2019 | 476B |
| 1994 | 59.7B | 2007 | 329B | 2020 | 368B |
| 1995 | 69.2B | 2008 | 459B | 2021 | 464B |
| 1996 | 76.3B | 2009 | 269B | 2022 | 611B |
| 1997 | 82.9B | 2010 | 349B | 2023 | 547B |
| 1998 | 74.2B | 2011 | 470B | 2024 | 564B |
| 1999 | 79.3B | 2012 | 525B | 2025 | 582B |
| 2000 | 123B | 2013 | 555B | 2026 | 625B |
| 2001 | 100B | 2014 | 518B | | |
| 2002 | 81B | 2015 | 281B | | |
Show data table
| 1991 | 36% | 2003 | 20.1% | 2015 | 26.4% |
| 1992 | 29.6% | 2004 | 17.7% | 2016 | 31.7% |
| 1993 | 31.5% | 2005 | 15.7% | 2017 | 27.2% |
| 1994 | 30.1% | 2006 | 15.6% | 2018 | 25.9% |
| 1995 | 26.1% | 2007 | 17.7% | 2019 | 27.4% |
| 1996 | 27.6% | 2008 | 22% | 2020 | 30.5% |
| 1997 | 22.6% | 2009 | 35% | 2021 | 25.9% |
| 1998 | 25.8% | 2010 | 30.4% | 2022 | 22.7% |
| 1999 | 24.3% | 2011 | 29.6% | 2023 | 22.7% |
| 2000 | 21.8% | 2012 | 27.8% | 2024 | 21.4% |
| 2001 | 25.2% | 2013 | 28.9% | 2025 | 22.6% |
| 2002 | 21.3% | 2014 | 31.4% | 2026 | 22.5% |
Show data table
| 1991 | 65.1B | 2003 | 91.6B | 2015 | 370B |
| 1992 | 56.4B | 2004 | 96.1B | 2016 | 444B |
| 1993 | 60.3B | 2005 | 104B | 2017 | 404B |
| 1994 | 63.5B | 2006 | 127B | 2018 | 419B |
| 1995 | 60.9B | 2007 | 167B | 2019 | 437B |
| 1996 | 73.8B | 2008 | 254B | 2020 | 400B |
| 1997 | 63.9B | 2009 | 326B | 2021 | 402B |
| 1998 | 71.5B | 2010 | 343B | 2022 | 427B |
| 1999 | 75.3B | 2011 | 401B | 2023 | 435B |
| 2000 | 82.4B | 2012 | 401B | 2024 | 434B |
| 2001 | 95.7B | 2013 | 434B | 2025 | 474B |
| 2002 | 86B | 2014 | 490B | 2026 | 513B |