表を表示
| 1980 | 49% | 1996 | 55.8% | 2012 | 54.7% |
| 1981 | 49.2% | 1997 | 55% | 2013 | 54.6% |
| 1982 | 47.9% | 1998 | 55.3% | 2014 | 56.5% |
| 1983 | 50.7% | 1999 | 55.7% | 2015 | 53.5% |
| 1984 | 51.3% | 2000 | 54.7% | 2016 | 52.7% |
| 1985 | 53.1% | 2001 | 54.1% | 2017 | 52.3% |
| 1986 | 53.1% | 2002 | 53.3% | 2018 | 51.6% |
| 1987 | 54.7% | 2003 | 53.6% | 2019 | 54.1% |
| 1988 | 55.1% | 2004 | 55% | 2020 | 53.7% |
| 1989 | 54% | 2005 | 56.3% | 2021 | 53.8% |
| 1990 | 53.3% | 2006 | 55% | 2022 | 48.5% |
| 1991 | 52.3% | 2007 | 54.8% | 2023 | 50.8% |
| 1992 | 53.8% | 2008 | 53.7% | 2024 | 51.8% |
| 1993 | 55.7% | 2009 | 53.6% | 2025 | 50.5% |
| 1994 | 55.6% | 2010 | 54% | 2026 | 49.1% |
| 1995 | 55.2% | 2011 | 54.5% | | |
表を表示
| 1980 | 1,957億 | 1996 | 6,067億 | 2012 | 1.04兆 |
| 1981 | 2,156億 | 1997 | 6,288億 | 2013 | 1.06兆 |
| 1982 | 2,397億 | 1998 | 6,556億 | 2014 | 1.12兆 |
| 1983 | 2,800億 | 1999 | 6,916億 | 2015 | 1.09兆 |
| 1984 | 3,125億 | 2000 | 7,248億 | 2016 | 1.11兆 |
| 1985 | 3,515億 | 2001 | 7,427億 | 2017 | 1.14兆 |
| 1986 | 3,770億 | 2002 | 7,530億 | 2018 | 1.16兆 |
| 1987 | 4,085億 | 2003 | 7,718億 | 2019 | 1.25兆 |
| 1988 | 4,289億 | 2004 | 8,307億 | 2020 | 1.25兆 |
| 1989 | 4,433億 | 2005 | 8,945億 | 2021 | 1.37兆 |
| 1990 | 4,557億 | 2006 | 9,268億 | 2022 | 1.37兆 |
| 1991 | 4,659億 | 2007 | 9,546億 | 2023 | 1.42兆 |
| 1992 | 4,970億 | 2008 | 9,726億 | 2024 | 1.52兆 |
| 1993 | 5,172億 | 2009 | 9,267億 | 2025 | 1.54兆 |
| 1994 | 5,521億 | 2010 | 9,789億 | 2026 | 1.56兆 |
| 1995 | 5,721億 | 2011 | 1.01兆 | | |
表を表示
| 1980 | 52.7% | 1996 | 58.2% | 2012 | 57.9% |
| 1981 | 56% | 1997 | 56.2% | 2013 | 55.6% |
| 1982 | 57.1% | 1998 | 55.6% | 2014 | 55.1% |
| 1983 | 57.2% | 1999 | 54.7% | 2015 | 54.4% |
| 1984 | 55.7% | 2000 | 52.9% | 2016 | 52.4% |
| 1985 | 54.7% | 2001 | 53% | 2017 | 50.6% |
| 1986 | 51.8% | 2002 | 53.1% | 2018 | 50.8% |
| 1987 | 53.3% | 2003 | 53.5% | 2019 | 49.8% |
| 1988 | 55.2% | 2004 | 52.8% | 2020 | 53.3% |
| 1989 | 55.3% | 2005 | 51.1% | 2021 | 49.7% |
| 1990 | 55.1% | 2006 | 49.7% | 2022 | 45.1% |
| 1991 | 55.5% | 2007 | 49.5% | 2023 | 47.4% |
| 1992 | 56.4% | 2008 | 50.3% | 2024 | 47.3% |
| 1993 | 59.5% | 2009 | 56.3% | 2025 | 47.6% |
| 1994 | 59.5% | 2010 | 56.5% | 2026 | 48.9% |
| 1995 | 58.7% | 2011 | 56.3% | | |
表を表示
| 1980 | 2,104億 | 1996 | 6,328億 | 2012 | 1.1兆 |
| 1981 | 2,453億 | 1997 | 6,428億 | 2013 | 1.08兆 |
| 1982 | 2,860億 | 1998 | 6,590億 | 2014 | 1.09兆 |
| 1983 | 3,159億 | 1999 | 6,784億 | 2015 | 1.1兆 |
| 1984 | 3,394億 | 2000 | 7,010億 | 2016 | 1.1兆 |
| 1985 | 3,622億 | 2001 | 7,273億 | 2017 | 1.11兆 |
| 1986 | 3,676億 | 2002 | 7,495億 | 2018 | 1.14兆 |
| 1987 | 3,978億 | 2003 | 7,698億 | 2019 | 1.15兆 |
| 1988 | 4,296億 | 2004 | 7,970億 | 2020 | 1.24兆 |
| 1989 | 4,543億 | 2005 | 8,118億 | 2021 | 1.27兆 |
| 1990 | 4,710億 | 2006 | 8,377億 | 2022 | 1.28兆 |
| 1991 | 4,940億 | 2007 | 8,621億 | 2023 | 1.32兆 |
| 1992 | 5,210億 | 2008 | 9,100億 | 2024 | 1.39兆 |
| 1993 | 5,518億 | 2009 | 9,742億 | 2025 | 1.46兆 |
| 1994 | 5,904億 | 2010 | 1.02兆 | 2026 | 1.56兆 |
| 1995 | 6,084億 | 2011 | 1.04兆 | | |