表を表示
| 1980 | 20.5% | 1996 | 22.8% | 2012 | 24.5% |
| 1981 | 22.2% | 1997 | 23.6% | 2013 | 23.7% |
| 1982 | 23.8% | 1998 | 23.6% | 2014 | 27.6% |
| 1983 | 22.8% | 1999 | 23.5% | 2015 | 25.6% |
| 1984 | 25.6% | 2000 | 23% | 2016 | 27.1% |
| 1985 | 25.6% | 2001 | 22.8% | 2017 | 25.1% |
| 1986 | 24.6% | 2002 | 23.7% | 2018 | 24.6% |
| 1987 | 24.8% | 2003 | 23.5% | 2019 | 25.7% |
| 1988 | 25.4% | 2004 | 22.1% | 2020 | 27% |
| 1989 | 25.7% | 2005 | 22.4% | 2021 | 30% |
| 1990 | 25.4% | 2006 | 23% | 2022 | 27.3% |
| 1991 | 25.8% | 2007 | 24.1% | 2023 | 27.2% |
| 1992 | 22.6% | 2008 | 27% | 2024 | 27.9% |
| 1993 | 21.3% | 2009 | 28.2% | 2025 | 28.7% |
| 1994 | 23.1% | 2010 | 27.4% | 2026 | 28.5% |
| 1995 | 21.4% | 2011 | 25.9% | | |
表を表示
| 1980 | 4,200万 | 1996 | 2.17億 | 2012 | 4.84億 |
| 1981 | 5,800万 | 1997 | 2.36億 | 2013 | 4.89億 |
| 1982 | 7,000万 | 1998 | 2.55億 | 2014 | 5.75億 |
| 1983 | 7,300万 | 1999 | 2.65億 | 2015 | 5.43億 |
| 1984 | 9,200万 | 2000 | 2.65億 | 2016 | 5.96億 |
| 1985 | 1.01億 | 2001 | 2.84億 | 2017 | 5.72億 |
| 1986 | 1.09億 | 2002 | 3.12億 | 2018 | 5.88億 |
| 1987 | 1.22億 | 2003 | 3.23億 | 2019 | 6.31億 |
| 1988 | 1.46億 | 2004 | 3.29億 | 2020 | 6.29億 |
| 1989 | 1.56億 | 2005 | 3.51億 | 2021 | 7.19億 |
| 1990 | 1.73億 | 2006 | 3.99億 | 2022 | 7.14億 |
| 1991 | 1.86億 | 2007 | 4.63億 | 2023 | 7.7億 |
| 1992 | 1.79億 | 2008 | 5.35億 | 2024 | 8.48億 |
| 1993 | 1.73億 | 2009 | 5.43億 | 2025 | 9.12億 |
| 1994 | 1.89億 | 2010 | 5.32億 | 2026 | 9.5億 |
| 1995 | 1.93億 | 2011 | 4.99億 | | |
表を表示
| 1980 | 24.1% | 1996 | 21.2% | 2012 | 26.3% |
| 1981 | 24.9% | 1997 | 26.4% | 2013 | 29.5% |
| 1982 | 23.5% | 1998 | 25.4% | 2014 | 30.4% |
| 1983 | 24.7% | 1999 | 25.5% | 2015 | 27.6% |
| 1984 | 23.1% | 2000 | 23.8% | 2016 | 27.1% |
| 1985 | 21.4% | 2001 | 24.4% | 2017 | 26.6% |
| 1986 | 22.3% | 2002 | 25.7% | 2018 | 26.3% |
| 1987 | 23.7% | 2003 | 26% | 2019 | 29.1% |
| 1988 | 24.8% | 2004 | 24.9% | 2020 | 32.9% |
| 1989 | 27.6% | 2005 | 26.7% | 2021 | 37.2% |
| 1990 | 23.7% | 2006 | 26.1% | 2022 | 36.6% |
| 1991 | 26.2% | 2007 | 27.1% | 2023 | 39.7% |
| 1992 | 25.9% | 2008 | 28.3% | 2024 | 43.9% |
| 1993 | 22.8% | 2009 | 31% | 2025 | 41% |
| 1994 | 23% | 2010 | 31.1% | 2026 | 40.6% |
| 1995 | 20.3% | 2011 | 29.4% | | |
表を表示
| 1980 | 5,000万 | 1996 | 2.02億 | 2012 | 5.19億 |
| 1981 | 6,500万 | 1997 | 2.64億 | 2013 | 6.09億 |
| 1982 | 7,000万 | 1998 | 2.74億 | 2014 | 6.33億 |
| 1983 | 7,900万 | 1999 | 2.87億 | 2015 | 5.86億 |
| 1984 | 8,300万 | 2000 | 2.75億 | 2016 | 5.95億 |
| 1985 | 8,400万 | 2001 | 3.04億 | 2017 | 6.07億 |
| 1986 | 9,900万 | 2002 | 3.39億 | 2018 | 6.28億 |
| 1987 | 1.17億 | 2003 | 3.57億 | 2019 | 7.16億 |
| 1988 | 1.42億 | 2004 | 3.69億 | 2020 | 7.67億 |
| 1989 | 1.68億 | 2005 | 4.18億 | 2021 | 8.91億 |
| 1990 | 1.62億 | 2006 | 4.53億 | 2022 | 9.59億 |
| 1991 | 1.89億 | 2007 | 5.23億 | 2023 | 11.2億 |
| 1992 | 2.05億 | 2008 | 5.6億 | 2024 | 13.3億 |
| 1993 | 1.86億 | 2009 | 5.98億 | 2025 | 13億 |
| 1994 | 1.88億 | 2010 | 6.04億 | 2026 | 13.5億 |
| 1995 | 1.83億 | 2011 | 5.66億 | | |