表を表示
| 1980 | 46.5% | 1996 | 45.4% | 2012 | 43.8% |
| 1981 | 47.1% | 1997 | 44.1% | 2013 | 44.7% |
| 1982 | 48% | 1998 | 43.3% | 2014 | 44.6% |
| 1983 | 48.9% | 1999 | 44.6% | 2015 | 43.4% |
| 1984 | 48.3% | 2000 | 44.3% | 2016 | 44.1% |
| 1985 | 48.6% | 2001 | 43.6% | 2017 | 44.1% |
| 1986 | 48.4% | 2002 | 42.6% | 2018 | 43.9% |
| 1987 | 48.4% | 2003 | 42.6% | 2019 | 44% |
| 1988 | 47.4% | 2004 | 42.8% | 2020 | 44.1% |
| 1989 | 44.8% | 2005 | 42.9% | 2021 | 43.6% |
| 1990 | 44.7% | 2006 | 44% | 2022 | 43.3% |
| 1991 | 47.5% | 2007 | 43.1% | 2023 | 43.6% |
| 1992 | 47.1% | 2008 | 44.2% | 2024 | 43.5% |
| 1993 | 47.7% | 2009 | 43.4% | 2025 | 43.3% |
| 1994 | 45.9% | 2010 | 43.6% | 2026 | 43.5% |
| 1995 | 45.2% | 2011 | 43.4% | | |
表を表示
| 1980 | 812億 | 1996 | 1,569億 | 2012 | 2,884億 |
| 1981 | 864億 | 1997 | 1,630億 | 2013 | 2,973億 |
| 1982 | 916億 | 1998 | 1,709億 | 2014 | 3,024億 |
| 1983 | 969億 | 1999 | 1,872億 | 2015 | 3,036億 |
| 1984 | 1,000億 | 2000 | 2,005億 | 2016 | 3,179億 |
| 1985 | 1,054億 | 2001 | 2,106億 | 2017 | 3,312億 |
| 1986 | 1,081億 | 2002 | 2,140億 | 2018 | 3,459億 |
| 1987 | 1,098億 | 2003 | 2,191億 | 2019 | 3,652億 |
| 1988 | 1,122億 | 2004 | 2,278億 | 2020 | 3,600億 |
| 1989 | 1,124億 | 2005 | 2,373億 | 2021 | 3,890億 |
| 1990 | 1,187億 | 2006 | 2,585億 | 2022 | 4,300億 |
| 1991 | 1,332億 | 2007 | 2,685億 | 2023 | 4,582億 |
| 1992 | 1,375億 | 2008 | 2,879億 | 2024 | 4,879億 |
| 1993 | 1,433億 | 2009 | 2,733億 | 2025 | 5,109億 |
| 1994 | 1,449億 | 2010 | 2,801億 | 2026 | 5,348億 |
| 1995 | 1,492億 | 2011 | 2,844億 | | |
表を表示
| 1980 | 50.6% | 1996 | 47.3% | 2012 | 47.6% |
| 1981 | 52.3% | 1997 | 45.7% | 2013 | 47.5% |
| 1982 | 53.9% | 1998 | 44.6% | 2014 | 46.7% |
| 1983 | 54.5% | 1999 | 44.3% | 2015 | 45.3% |
| 1984 | 54.5% | 2000 | 43.2% | 2016 | 43.9% |
| 1985 | 52.9% | 2001 | 44.1% | 2017 | 42.8% |
| 1986 | 52.6% | 2002 | 44.8% | 2018 | 42.4% |
| 1987 | 53.6% | 2003 | 45.8% | 2019 | 42.1% |
| 1988 | 51.7% | 2004 | 44.7% | 2020 | 47.8% |
| 1989 | 49.9% | 2005 | 43.4% | 2021 | 45.9% |
| 1990 | 48.8% | 2006 | 44% | 2022 | 43.3% |
| 1991 | 49.6% | 2007 | 43.3% | 2023 | 44% |
| 1992 | 50.2% | 2008 | 44.3% | 2024 | 44.4% |
| 1993 | 50.9% | 2009 | 48.4% | 2025 | 45.1% |
| 1994 | 49.4% | 2010 | 48.9% | 2026 | 46.2% |
| 1995 | 53.9% | 2011 | 47.8% | | |
表を表示
| 1980 | 885億 | 1996 | 1,635億 | 2012 | 3,136億 |
| 1981 | 959億 | 1997 | 1,690億 | 2013 | 3,164億 |
| 1982 | 1,027億 | 1998 | 1,762億 | 2014 | 3,172億 |
| 1983 | 1,080億 | 1999 | 1,860億 | 2015 | 3,164億 |
| 1984 | 1,130億 | 2000 | 1,954億 | 2016 | 3,163億 |
| 1985 | 1,146億 | 2001 | 2,129億 | 2017 | 3,211億 |
| 1986 | 1,176億 | 2002 | 2,252億 | 2018 | 3,341億 |
| 1987 | 1,217億 | 2003 | 2,356億 | 2019 | 3,493億 |
| 1988 | 1,225億 | 2004 | 2,375億 | 2020 | 3,904億 |
| 1989 | 1,252億 | 2005 | 2,402億 | 2021 | 4,092億 |
| 1990 | 1,295億 | 2006 | 2,583億 | 2022 | 4,300億 |
| 1991 | 1,390億 | 2007 | 2,695億 | 2023 | 4,621億 |
| 1992 | 1,466億 | 2008 | 2,883億 | 2024 | 4,985億 |
| 1993 | 1,527億 | 2009 | 3,052億 | 2025 | 5,326億 |
| 1994 | 1,561億 | 2010 | 3,142億 | 2026 | 5,674億 |
| 1995 | 1,780億 | 2011 | 3,134億 | | |