表を表示
| 1980 | 36.2% | 1996 | 31.9% | 2012 | 35.4% |
| 1981 | 37.6% | 1997 | 32.7% | 2013 | 36.3% |
| 1982 | 38.5% | 1998 | 34.1% | 2014 | 35.4% |
| 1983 | 37.2% | 1999 | 34.5% | 2015 | 35.6% |
| 1984 | 37.1% | 2000 | 35.2% | 2016 | 36% |
| 1985 | 36.9% | 2001 | 34.8% | 2017 | 36.4% |
| 1986 | 35.9% | 2002 | 33.9% | 2018 | 36.2% |
| 1987 | 34.7% | 2003 | 33.8% | 2019 | 35.9% |
| 1988 | 34.4% | 2004 | 34.7% | 2020 | 36.4% |
| 1989 | 34.1% | 2005 | 35.1% | 2021 | 37.4% |
| 1990 | 33.4% | 2006 | 35.4% | 2022 | 38.6% |
| 1991 | 33% | 2007 | 35.8% | 2023 | 38.1% |
| 1992 | 32.3% | 2008 | 35.6% | 2024 | 37.6% |
| 1993 | 31% | 2009 | 34.2% | 2025 | 38.3% |
| 1994 | 31.6% | 2010 | 35.2% | 2026 | 40% |
| 1995 | 32.5% | 2011 | 35.9% | | |
表を表示
| 1980 | 941億 | 1996 | 2,916億 | 2012 | 6,091億 |
| 1981 | 1,092億 | 1997 | 3,133億 | 2013 | 6,493億 |
| 1982 | 1,233億 | 1998 | 3,415億 | 2014 | 6,630億 |
| 1983 | 1,309億 | 1999 | 3,611億 | 2015 | 6,854億 |
| 1984 | 1,403億 | 2000 | 3,884億 | 2016 | 7,221億 |
| 1985 | 1,532億 | 2001 | 4,006億 | 2017 | 7,625億 |
| 1986 | 1,607億 | 2002 | 4,045億 | 2018 | 7,868億 |
| 1987 | 1,729億 | 2003 | 4,269億 | 2019 | 8,098億 |
| 1988 | 1,919億 | 2004 | 4,607億 | 2020 | 7,732億 |
| 1989 | 2,103億 | 2005 | 4,929億 | 2021 | 8,679億 |
| 1990 | 2,245億 | 2006 | 5,240億 | 2022 | 9,974億 |
| 1991 | 2,336億 | 2007 | 5,548億 | 2023 | 1.05兆 |
| 1992 | 2,367億 | 2008 | 5,699億 | 2024 | 1.09兆 |
| 1993 | 2,398億 | 2009 | 5,334億 | 2025 | 1.16兆 |
| 1994 | 2,573億 | 2010 | 5,692億 | 2026 | 1.25兆 |
| 1995 | 2,779億 | 2011 | 5,993億 | | |
表を表示
| 1980 | 39% | 1996 | 35.6% | 2012 | 43.3% |
| 1981 | 41.3% | 1997 | 34.7% | 2013 | 41.6% |
| 1982 | 40.8% | 1998 | 34.3% | 2014 | 40.8% |
| 1983 | 40.1% | 1999 | 33.7% | 2015 | 40.1% |
| 1984 | 40.2% | 2000 | 33.8% | 2016 | 39.3% |
| 1985 | 39.4% | 2001 | 34.5% | 2017 | 38.8% |
| 1986 | 38.2% | 2002 | 35.8% | 2018 | 38.5% |
| 1987 | 36.4% | 2003 | 37% | 2019 | 38.3% |
| 1988 | 34.2% | 2004 | 37.9% | 2020 | 49.3% |
| 1989 | 33.6% | 2005 | 38.3% | 2021 | 44.9% |
| 1990 | 34.9% | 2006 | 38.2% | 2022 | 43.2% |
| 1991 | 35.7% | 2007 | 38.4% | 2023 | 44.2% |
| 1992 | 37.7% | 2008 | 40.6% | 2024 | 43.7% |
| 1993 | 37.6% | 2009 | 44.2% | 2025 | 43.6% |
| 1994 | 37.4% | 2010 | 44.5% | 2026 | 43.9% |
| 1995 | 37.5% | 2011 | 43.3% | | |
表を表示
| 1980 | 1,015億 | 1996 | 3,248億 | 2012 | 7,461億 |
| 1981 | 1,201億 | 1997 | 3,324億 | 2013 | 7,440億 |
| 1982 | 1,306億 | 1998 | 3,436億 | 2014 | 7,655億 |
| 1983 | 1,410億 | 1999 | 3,531億 | 2015 | 7,729億 |
| 1984 | 1,523億 | 2000 | 3,729億 | 2016 | 7,879億 |
| 1985 | 1,635億 | 2001 | 3,967億 | 2017 | 8,145億 |
| 1986 | 1,711億 | 2002 | 4,277億 | 2018 | 8,352億 |
| 1987 | 1,812億 | 2003 | 4,672億 | 2019 | 8,634億 |
| 1988 | 1,905億 | 2004 | 5,024億 | 2020 | 1.05兆 |
| 1989 | 2,073億 | 2005 | 5,368億 | 2021 | 1.04兆 |
| 1990 | 2,348億 | 2006 | 5,644億 | 2022 | 1.12兆 |
| 1991 | 2,531億 | 2007 | 5,956億 | 2023 | 1.22兆 |
| 1992 | 2,762億 | 2008 | 6,507億 | 2024 | 1.26兆 |
| 1993 | 2,908億 | 2009 | 6,889億 | 2025 | 1.33兆 |
| 1994 | 3,039億 | 2010 | 7,187億 | 2026 | 1.38兆 |
| 1995 | 3,204億 | 2011 | 7,233億 | | |