Show data table
| 1991 | 27.5% | 2003 | 15.8% | 2015 | 30% |
| 1992 | 26.7% | 2004 | 17.5% | 2016 | 30.5% |
| 1993 | 20.4% | 2005 | 18.2% | 2017 | 31.7% |
| 1994 | 20.7% | 2006 | 18.6% | 2018 | 34.9% |
| 1995 | 22.9% | 2007 | 20.5% | 2019 | 37.6% |
| 1996 | 20.5% | 2008 | 25.1% | 2020 | 37% |
| 1997 | 19.6% | 2009 | 24.2% | 2021 | 40.6% |
| 1998 | 19.2% | 2010 | 23.2% | 2022 | 32.6% |
| 1999 | 21.1% | 2011 | 20.7% | 2023 | 38.2% |
| 2000 | 17.3% | 2012 | 20.6% | 2024 | 30.7% |
| 2001 | 17.2% | 2013 | 19.9% | 2025 | 31.6% |
| 2002 | 16.9% | 2014 | 21.8% | 2026 | 28.1% |
Show data table
| 1991 | 6.84B | 2003 | 6.72B | 2015 | 28B |
| 1992 | 7B | 2004 | 7.88B | 2016 | 30.1B |
| 1993 | 5.49B | 2005 | 8.7B | 2017 | 34.1B |
| 1994 | 6.22B | 2006 | 10B | 2018 | 39.8B |
| 1995 | 7.09B | 2007 | 12B | 2019 | 45.8B |
| 1996 | 6.62B | 2008 | 16.6B | 2020 | 43.5B |
| 1997 | 6.86B | 2009 | 16.9B | 2021 | 48.7B |
| 1998 | 7.1B | 2010 | 16.7B | 2022 | 43.3B |
| 1999 | 8.06B | 2011 | 15.8B | 2023 | 54B |
| 2000 | 7.18B | 2012 | 15.8B | 2024 | 47.4B |
| 2001 | 7.12B | 2013 | 16.2B | 2025 | 51.4B |
| 2002 | 6.84B | 2014 | 18.6B | 2026 | 48.6B |
Show data table
| 1991 | 30% | 2003 | 17% | 2015 | 38.1% |
| 1992 | 28.8% | 2004 | 16.7% | 2016 | 31.2% |
| 1993 | 23.7% | 2005 | 16.5% | 2017 | 32.7% |
| 1994 | 22% | 2006 | 18.2% | 2018 | 29.4% |
| 1995 | 25.3% | 2007 | 20.3% | 2019 | 35.1% |
| 1996 | 22.1% | 2008 | 25.1% | 2020 | 38.8% |
| 1997 | 20.1% | 2009 | 24.9% | 2021 | 38.6% |
| 1998 | 25.2% | 2010 | 25.6% | 2022 | 38.5% |
| 1999 | 21.6% | 2011 | 22.7% | 2023 | 38.9% |
| 2000 | 23% | 2012 | 22.1% | 2024 | 33.1% |
| 2001 | 20.2% | 2013 | 20.1% | 2025 | 35.5% |
| 2002 | 20.2% | 2014 | 20.5% | 2026 | 32.3% |
Show data table
| 1991 | 7.47B | 2003 | 7.24B | 2015 | 35.5B |
| 1992 | 7.55B | 2004 | 7.55B | 2016 | 30.7B |
| 1993 | 6.39B | 2005 | 7.89B | 2017 | 35.2B |
| 1994 | 6.62B | 2006 | 9.77B | 2018 | 33.5B |
| 1995 | 7.82B | 2007 | 11.9B | 2019 | 42.8B |
| 1996 | 7.14B | 2008 | 16.6B | 2020 | 45.5B |
| 1997 | 7.02B | 2009 | 17.4B | 2021 | 46.2B |
| 1998 | 9.33B | 2010 | 18.4B | 2022 | 51.2B |
| 1999 | 8.26B | 2011 | 17.3B | 2023 | 55.1B |
| 2000 | 9.53B | 2012 | 16.9B | 2024 | 51.2B |
| 2001 | 8.37B | 2013 | 16.4B | 2025 | 57.8B |
| 2002 | 8.16B | 2014 | 17.5B | 2026 | 55.9B |