Show data table
| 1985 | 32.1% | 1999 | 30.7% | 2013 | 25.7% |
| 1986 | 28.5% | 2000 | 29.4% | 2014 | 29.6% |
| 1987 | 26% | 2001 | 29.5% | 2015 | 27.1% |
| 1988 | 28.3% | 2002 | 28.4% | 2016 | 27.3% |
| 1989 | 32.2% | 2003 | 33.4% | 2017 | 28.5% |
| 1990 | 33.1% | 2004 | 35.7% | 2018 | 29.1% |
| 1991 | 31.5% | 2005 | 34.4% | 2019 | 27.6% |
| 1992 | 33.8% | 2006 | 32.1% | 2020 | 25.5% |
| 1993 | 31% | 2007 | 35.1% | 2021 | 27.2% |
| 1994 | 29% | 2008 | 31.5% | 2022 | 27.9% |
| 1995 | 30.6% | 2009 | 28.4% | 2023 | 27.4% |
| 1996 | 29.9% | 2010 | 26.8% | 2024 | 27.3% |
| 1997 | 28% | 2011 | 28.1% | 2025 | 27.4% |
| 1998 | 26.7% | 2012 | 25% | 2026 | 28.2% |
Show data table
| 1985 | 703M | 1999 | 2.02B | 2013 | 6.91B |
| 1986 | 709M | 2000 | 2.01B | 2014 | 8.51B |
| 1987 | 660M | 2001 | 2.14B | 2015 | 8.16B |
| 1988 | 738M | 2002 | 2.22B | 2016 | 8.48B |
| 1989 | 870M | 2003 | 2.76B | 2017 | 9.21B |
| 1990 | 1.01B | 2004 | 3.29B | 2018 | 9.79B |
| 1991 | 1.03B | 2005 | 3.54B | 2019 | 9.53B |
| 1992 | 1.37B | 2006 | 3.97B | 2020 | 8.67B |
| 1993 | 1.35B | 2007 | 4.94B | 2021 | 9.79B |
| 1994 | 1.42B | 2008 | 5.73B | 2022 | 10.6B |
| 1995 | 1.62B | 2009 | 5.54B | 2023 | 10.9B |
| 1996 | 1.65B | 2010 | 5.75B | 2024 | 11.4B |
| 1997 | 1.62B | 2011 | 6.52B | 2025 | 12B |
| 1998 | 1.71B | 2012 | 6.19B | 2026 | 13B |
Show data table
| 1985 | 39.6% | 1999 | 31.8% | 2013 | 34.5% |
| 1986 | 32.3% | 2000 | 31.2% | 2014 | 36.3% |
| 1987 | 39.3% | 2001 | 30.6% | 2015 | 32.3% |
| 1988 | 41.2% | 2002 | 31.6% | 2016 | 30% |
| 1989 | 39.1% | 2003 | 35% | 2017 | 31.7% |
| 1990 | 39.9% | 2004 | 35.1% | 2018 | 33.3% |
| 1991 | 39.6% | 2005 | 36.6% | 2019 | 32.7% |
| 1992 | 31.7% | 2006 | 34% | 2020 | 33% |
| 1993 | 32.5% | 2007 | 32.4% | 2021 | 33.8% |
| 1994 | 30.6% | 2008 | 29.6% | 2022 | 32.8% |
| 1995 | 32.1% | 2009 | 30.7% | 2023 | 33.9% |
| 1996 | 32.6% | 2010 | 26.6% | 2024 | 34.6% |
| 1997 | 30.7% | 2011 | 29.4% | 2025 | 33.7% |
| 1998 | 32.3% | 2012 | 28.3% | 2026 | 33.7% |
Show data table
| 1985 | 867M | 1999 | 2.1B | 2013 | 9.27B |
| 1986 | 804M | 2000 | 2.13B | 2014 | 10.5B |
| 1987 | 1B | 2001 | 2.22B | 2015 | 9.72B |
| 1988 | 1.08B | 2002 | 2.47B | 2016 | 9.29B |
| 1989 | 1.05B | 2003 | 2.9B | 2017 | 10.2B |
| 1990 | 1.22B | 2004 | 3.24B | 2018 | 11.2B |
| 1991 | 1.3B | 2005 | 3.76B | 2019 | 11.3B |
| 1992 | 1.29B | 2006 | 4.2B | 2020 | 11.2B |
| 1993 | 1.41B | 2007 | 4.55B | 2021 | 12.2B |
| 1994 | 1.5B | 2008 | 5.38B | 2022 | 12.5B |
| 1995 | 1.7B | 2009 | 5.98B | 2023 | 13.5B |
| 1996 | 1.8B | 2010 | 5.71B | 2024 | 14.4B |
| 1997 | 1.78B | 2011 | 6.8B | 2025 | 14.7B |
| 1998 | 2.06B | 2012 | 7.01B | 2026 | 15.5B |