Show data table
| 1985 | 70.9% | 1999 | 25.9% | 2013 | 43.9% |
| 1986 | 46.5% | 2000 | 44.4% | 2014 | 35.3% |
| 1987 | 33.7% | 2001 | 38.1% | 2015 | 25.6% |
| 1988 | 33.5% | 2002 | 36.8% | 2016 | 23.1% |
| 1989 | 31.5% | 2003 | 38.9% | 2017 | 22.7% |
| 1990 | 30.3% | 2004 | 41.7% | 2018 | 30% |
| 1991 | 29.6% | 2005 | 45.1% | 2019 | 28% |
| 1992 | 25.8% | 2006 | 47.8% | 2020 | 16.6% |
| 1993 | 25.2% | 2007 | 32.4% | 2021 | 21.7% |
| 1994 | 24.5% | 2008 | 63.3% | 2022 | 25.9% |
| 1995 | 24.2% | 2009 | 38.4% | 2023 | 21.5% |
| 1996 | 28.2% | 2010 | 36.8% | 2024 | 17.4% |
| 1997 | 27.2% | 2011 | 51.5% | 2025 | 16.5% |
| 1998 | 21.4% | 2012 | 50.7% | 2026 | 18.4% |
Show data table
| 1980 | 6.27B | 1996 | 2.86B | 2012 | 12.1B |
| 1981 | 8.46B | 1997 | 2.84B | 2013 | 9.93B |
| 1982 | 7.87B | 1998 | 1.92B | 2014 | 7.64B |
| 1983 | 7.75B | 1999 | 2.54B | 2015 | 4.55B |
| 1984 | 7.35B | 2000 | 5.08B | 2016 | 3.64B |
| 1985 | 7.53B | 2001 | 4.23B | 2017 | 3.81B |
| 1986 | 3.33B | 2002 | 4.27B | 2018 | 5.49B |
| 1987 | 2.75B | 2003 | 4.93B | 2019 | 5.14B |
| 1988 | 2.49B | 2004 | 6.15B | 2020 | 2.75B |
| 1989 | 2.53B | 2005 | 7.92B | 2021 | 4.09B |
| 1990 | 2.71B | 2006 | 9.65B | 2022 | 5.95B |
| 1991 | 2.69B | 2007 | 6.64B | 2023 | 4.36B |
| 1992 | 2.33B | 2008 | 14.3B | 2024 | 3.57B |
| 1993 | 2.27B | 2009 | 6.65B | 2025 | 3.45B |
| 1994 | 2.25B | 2010 | 6.87B | 2026 | 4B |
| 1995 | 2.45B | 2011 | 12B | | |
Show data table
| 1985 | 40.6% | 1999 | 44.1% | 2013 | 33.4% |
| 1986 | 40% | 2000 | 37.5% | 2014 | 34% |
| 1987 | 30.3% | 2001 | 35.5% | 2015 | 37% |
| 1988 | 36.6% | 2002 | 41.4% | 2016 | 39.8% |
| 1989 | 36.2% | 2003 | 30.9% | 2017 | 36.6% |
| 1990 | 32% | 2004 | 33.2% | 2018 | 32.9% |
| 1991 | 30.6% | 2005 | 29.1% | 2019 | 32.1% |
| 1992 | 34.1% | 2006 | 28% | 2020 | 32.8% |
| 1993 | 38% | 2007 | 29.3% | 2021 | 30.1% |
| 1994 | 47.1% | 2008 | 27.2% | 2022 | 26.1% |
| 1995 | 44% | 2009 | 34.8% | 2023 | 30.1% |
| 1996 | 36.9% | 2010 | 25.5% | 2024 | 30.3% |
| 1997 | 39% | 2011 | 29.9% | 2025 | 29.9% |
| 1998 | 45.4% | 2012 | 31.1% | 2026 | 29.1% |
Show data table
| 1980 | 1.14B | 1996 | 3.74B | 2012 | 7.41B |
| 1981 | 1.38B | 1997 | 4.08B | 2013 | 7.57B |
| 1982 | 2.17B | 1998 | 4.07B | 2014 | 7.37B |
| 1983 | 5.63B | 1999 | 4.32B | 2015 | 6.58B |
| 1984 | 4.14B | 2000 | 4.3B | 2016 | 6.27B |
| 1985 | 4.32B | 2001 | 3.95B | 2017 | 6.12B |
| 1986 | 2.87B | 2002 | 4.8B | 2018 | 6.02B |
| 1987 | 2.47B | 2003 | 3.91B | 2019 | 5.91B |
| 1988 | 2.71B | 2004 | 4.89B | 2020 | 5.44B |
| 1989 | 2.9B | 2005 | 5.11B | 2021 | 5.66B |
| 1990 | 2.85B | 2006 | 5.65B | 2022 | 6.01B |
| 1991 | 2.78B | 2007 | 6B | 2023 | 6.11B |
| 1992 | 3.07B | 2008 | 6.14B | 2024 | 6.21B |
| 1993 | 3.43B | 2009 | 6.03B | 2025 | 6.24B |
| 1994 | 4.31B | 2010 | 4.76B | 2026 | 6.34B |
| 1995 | 4.46B | 2011 | 6.97B | | |