表を表示
| 1980 | 46.7% | 1996 | 55.1% | 2012 | 53.5% |
| 1981 | 49.3% | 1997 | 53.6% | 2013 | 54.6% |
| 1982 | 48.8% | 1998 | 52.9% | 2014 | 54.6% |
| 1983 | 48.6% | 1999 | 51.5% | 2015 | 53.3% |
| 1984 | 50.2% | 2000 | 53.7% | 2016 | 53.4% |
| 1985 | 52% | 2001 | 51.1% | 2017 | 52.2% |
| 1986 | 53.4% | 2002 | 51.4% | 2018 | 51.8% |
| 1987 | 51.7% | 2003 | 50.6% | 2019 | 51.7% |
| 1988 | 54.4% | 2004 | 50.3% | 2020 | 50.9% |
| 1989 | 53.9% | 2005 | 51.8% | 2021 | 52.5% |
| 1990 | 53.7% | 2006 | 52.2% | 2022 | 52.5% |
| 1991 | 56.1% | 2007 | 51.8% | 2023 | 53.1% |
| 1992 | 55.9% | 2008 | 52.1% | 2024 | 53.4% |
| 1993 | 55.6% | 2009 | 51.6% | 2025 | 53.7% |
| 1994 | 55.8% | 2010 | 51.4% | 2026 | 53.9% |
| 1995 | 54.1% | 2011 | 52.8% | | |
表を表示
| 1980 | 157億 | 1996 | 562億 | 2012 | 1,073億 |
| 1981 | 188億 | 1997 | 594億 | 2013 | 1,111億 |
| 1982 | 209億 | 1998 | 637億 | 2014 | 1,125億 |
| 1983 | 232億 | 1999 | 654億 | 2015 | 1,121億 |
| 1984 | 268億 | 2000 | 732億 | 2016 | 1,152億 |
| 1985 | 303億 | 2001 | 739億 | 2017 | 1,173億 |
| 1986 | 335億 | 2002 | 763億 | 2018 | 1,201億 |
| 1987 | 350億 | 2003 | 768億 | 2019 | 1,232億 |
| 1988 | 418億 | 2004 | 799億 | 2020 | 1,204億 |
| 1989 | 463億 | 2005 | 853億 | 2021 | 1,305億 |
| 1990 | 489億 | 2006 | 902億 | 2022 | 1,396億 |
| 1991 | 487億 | 2007 | 969億 | 2023 | 1,448億 |
| 1992 | 474億 | 2008 | 1,011億 | 2024 | 1,472億 |
| 1993 | 476億 | 2009 | 938億 | 2025 | 1,506億 |
| 1994 | 506億 | 2010 | 968億 | 2026 | 1,542億 |
| 1995 | 532億 | 2011 | 1,044億 | | |
表を表示
| 1980 | 43.9% | 1996 | 58.5% | 2012 | 55.7% |
| 1981 | 44.5% | 1997 | 54.9% | 2013 | 57.1% |
| 1982 | 46.4% | 1998 | 51.3% | 2014 | 57.6% |
| 1983 | 48.2% | 1999 | 49.9% | 2015 | 55.7% |
| 1984 | 47.5% | 2000 | 46.9% | 2016 | 55.1% |
| 1985 | 49.4% | 2001 | 46.2% | 2017 | 52.9% |
| 1986 | 50% | 2002 | 47.5% | 2018 | 52.7% |
| 1987 | 51% | 2003 | 48.3% | 2019 | 52.6% |
| 1988 | 49.5% | 2004 | 48.2% | 2020 | 56.5% |
| 1989 | 46.8% | 2005 | 49.2% | 2021 | 55.2% |
| 1990 | 47.1% | 2006 | 48.3% | 2022 | 52.6% |
| 1991 | 55.8% | 2007 | 46.7% | 2023 | 56% |
| 1992 | 60.8% | 2008 | 47.9% | 2024 | 57.8% |
| 1993 | 63.7% | 2009 | 54.1% | 2025 | 57.6% |
| 1994 | 62.2% | 2010 | 54% | 2026 | 58.7% |
| 1995 | 60% | 2011 | 53.8% | | |
表を表示
| 1980 | 148億 | 1996 | 596億 | 2012 | 1,116億 |
| 1981 | 170億 | 1997 | 608億 | 2013 | 1,162億 |
| 1982 | 199億 | 1998 | 618億 | 2014 | 1,186億 |
| 1983 | 230億 | 1999 | 633億 | 2015 | 1,172億 |
| 1984 | 254億 | 2000 | 640億 | 2016 | 1,189億 |
| 1985 | 288億 | 2001 | 669億 | 2017 | 1,188億 |
| 1986 | 314億 | 2002 | 704億 | 2018 | 1,221億 |
| 1987 | 345億 | 2003 | 733億 | 2019 | 1,255億 |
| 1988 | 380億 | 2004 | 765億 | 2020 | 1,334億 |
| 1989 | 402億 | 2005 | 810億 | 2021 | 1,372億 |
| 1990 | 428億 | 2006 | 834億 | 2022 | 1,401億 |
| 1991 | 485億 | 2007 | 873億 | 2023 | 1,527億 |
| 1992 | 516億 | 2008 | 930億 | 2024 | 1,594億 |
| 1993 | 545億 | 2009 | 983億 | 2025 | 1,615億 |
| 1994 | 564億 | 2010 | 1,016億 | 2026 | 1,679億 |
| 1995 | 591億 | 2011 | 1,064億 | | |