Show data table
| 1990 | 27.5% | 2003 | 20.8% | 2016 | 21.3% |
| 1991 | 22.4% | 2004 | 20.9% | 2017 | 23.1% |
| 1992 | 22.2% | 2005 | 20.4% | 2018 | 24.4% |
| 1993 | 23.4% | 2006 | 20.5% | 2019 | 25.9% |
| 1994 | 23.1% | 2007 | 20.9% | 2020 | 25.5% |
| 1995 | 22.1% | 2008 | 23.1% | 2021 | 25.6% |
| 1996 | 21.5% | 2009 | 22.1% | 2022 | 29.6% |
| 1997 | 20.8% | 2010 | 23.5% | 2023 | 28.7% |
| 1998 | 21.3% | 2011 | 24.7% | 2024 | 29.4% |
| 1999 | 21% | 2012 | 23.5% | 2025 | 28.8% |
| 2000 | 20.8% | 2013 | 23.8% | 2026 | 28.7% |
| 2001 | 21.1% | 2014 | 24.6% | | |
| 2002 | 21.6% | 2015 | 22.5% | | |
Show data table
| 1990 | 3.41B | 2003 | 7.73B | 2016 | 20.3B |
| 1991 | 3.08B | 2004 | 8.52B | 2017 | 23.6B |
| 1992 | 3.51B | 2005 | 8.98B | 2018 | 27.6B |
| 1993 | 3.94B | 2006 | 9.85B | 2019 | 31.9B |
| 1994 | 4.17B | 2007 | 10.9B | 2020 | 30.4B |
| 1995 | 4.3B | 2008 | 13.4B | 2021 | 33.5B |
| 1996 | 4.67B | 2009 | 13.6B | 2022 | 40.9B |
| 1997 | 5.01B | 2010 | 15.6B | 2023 | 43.2B |
| 1998 | 5.56B | 2011 | 16.7B | 2024 | 47B |
| 1999 | 5.98B | 2012 | 17.3B | 2025 | 49.7B |
| 2000 | 6.43B | 2013 | 18.8B | 2026 | 53.3B |
| 2001 | 7.03B | 2014 | 21B | | |
| 2002 | 7.45B | 2015 | 20.2B | | |
Show data table
| 1991 | 27.6% | 2003 | 23.5% | 2015 | 27.4% |
| 1992 | 25.7% | 2004 | 23% | 2016 | 27.2% |
| 1993 | 26.7% | 2005 | 23% | 2017 | 28.7% |
| 1994 | 25.9% | 2006 | 22.9% | 2018 | 28.7% |
| 1995 | 26.6% | 2007 | 23.3% | 2019 | 29.5% |
| 1996 | 26.7% | 2008 | 23.7% | 2020 | 34.5% |
| 1997 | 24.5% | 2009 | 24.6% | 2021 | 33.4% |
| 1998 | 24.2% | 2010 | 24% | 2022 | 36.6% |
| 1999 | 24% | 2011 | 27.9% | 2023 | 35.9% |
| 2000 | 24% | 2012 | 28.3% | 2024 | 35.8% |
| 2001 | 24% | 2013 | 30.8% | 2025 | 34% |
| 2002 | 24.1% | 2014 | 27.7% | 2026 | 36.1% |
Show data table
| 1991 | 3.81B | 2003 | 8.71B | 2015 | 24.6B |
| 1992 | 4.05B | 2004 | 9.38B | 2016 | 25.9B |
| 1993 | 4.48B | 2005 | 10.1B | 2017 | 29.3B |
| 1994 | 4.69B | 2006 | 11B | 2018 | 32.4B |
| 1995 | 5.18B | 2007 | 12.2B | 2019 | 36.3B |
| 1996 | 5.8B | 2008 | 13.7B | 2020 | 41.3B |
| 1997 | 5.9B | 2009 | 15.2B | 2021 | 43.7B |
| 1998 | 6.3B | 2010 | 15.9B | 2022 | 50.6B |
| 1999 | 6.85B | 2011 | 18.9B | 2023 | 54.2B |
| 2000 | 7.42B | 2012 | 20.9B | 2024 | 57.2B |
| 2001 | 7.99B | 2013 | 24.4B | 2025 | 58.7B |
| 2002 | 8.33B | 2014 | 23.6B | 2026 | 67B |