表を表示
| 1985 | 39.1% | 1999 | 38.1% | 2013 | 37.3% |
| 1986 | 41.5% | 2000 | 38.4% | 2014 | 37.3% |
| 1987 | 42.6% | 2001 | 38.5% | 2015 | 37.5% |
| 1988 | 44.2% | 2002 | 39.3% | 2016 | 37.4% |
| 1989 | 45.6% | 2003 | 40.3% | 2017 | 36.9% |
| 1990 | 46.8% | 2004 | 40.6% | 2018 | 37.4% |
| 1991 | 46.8% | 2005 | 42.2% | 2019 | 36.3% |
| 1992 | 46.2% | 2006 | 42.4% | 2020 | 37.7% |
| 1993 | 45.2% | 2007 | 40.6% | 2021 | 38.5% |
| 1994 | 44.7% | 2008 | 39.9% | 2022 | 37.7% |
| 1995 | 45.3% | 2009 | 38.5% | 2023 | 37.8% |
| 1996 | 42.4% | 2010 | 37.4% | 2024 | 38.5% |
| 1997 | 40.5% | 2011 | 37.4% | 2025 | 37.7% |
| 1998 | 39.6% | 2012 | 37.5% | 2026 | 37.2% |
表を表示
| 1985 | 177億 | 1999 | 424億 | 2013 | 850億 |
| 1986 | 217億 | 2000 | 455億 | 2014 | 898億 |
| 1987 | 266億 | 2001 | 486億 | 2015 | 945億 |
| 1988 | 306億 | 2002 | 525億 | 2016 | 997億 |
| 1989 | 336億 | 2003 | 571億 | 2017 | 1,058億 |
| 1990 | 358億 | 2004 | 621億 | 2018 | 1,130億 |
| 1991 | 352億 | 2005 | 678億 | 2019 | 1,162億 |
| 1992 | 357億 | 2006 | 717億 | 2020 | 1,222億 |
| 1993 | 375億 | 2007 | 744億 | 2021 | 1,357億 |
| 1994 | 398億 | 2008 | 758億 | 2022 | 1,454億 |
| 1995 | 429億 | 2009 | 740億 | 2023 | 1,560億 |
| 1996 | 426億 | 2010 | 755億 | 2024 | 1,646億 |
| 1997 | 421億 | 2011 | 789億 | 2025 | 1,677億 |
| 1998 | 419億 | 2012 | 811億 | 2026 | 1,737億 |
表を表示
| 1985 | 46.1% | 1999 | 39.2% | 2013 | 38.5% |
| 1986 | 46.8% | 2000 | 38.2% | 2014 | 37.6% |
| 1987 | 46% | 2001 | 37.2% | 2015 | 37.2% |
| 1988 | 46.1% | 2002 | 36.7% | 2016 | 36.4% |
| 1989 | 47.7% | 2003 | 36.6% | 2017 | 35.6% |
| 1990 | 49.5% | 2004 | 36.1% | 2018 | 36.1% |
| 1991 | 52.9% | 2005 | 37.1% | 2019 | 38.7% |
| 1992 | 52.4% | 2006 | 37.8% | 2020 | 41.9% |
| 1993 | 46.7% | 2007 | 37% | 2021 | 41.8% |
| 1994 | 42.7% | 2008 | 38.4% | 2022 | 41.7% |
| 1995 | 41.6% | 2009 | 40.3% | 2023 | 41% |
| 1996 | 39.8% | 2010 | 42.9% | 2024 | 41.7% |
| 1997 | 39.3% | 2011 | 42.3% | 2025 | 41.6% |
| 1998 | 40.1% | 2012 | 39.6% | 2026 | 41.2% |
表を表示
| 1985 | 208億 | 1999 | 436億 | 2013 | 880億 |
| 1986 | 245億 | 2000 | 453億 | 2014 | 906億 |
| 1987 | 287億 | 2001 | 470億 | 2015 | 936億 |
| 1988 | 319億 | 2002 | 491億 | 2016 | 971億 |
| 1989 | 352億 | 2003 | 518億 | 2017 | 1,019億 |
| 1990 | 379億 | 2004 | 552億 | 2018 | 1,090億 |
| 1991 | 398億 | 2005 | 596億 | 2019 | 1,240億 |
| 1992 | 405億 | 2006 | 638億 | 2020 | 1,359億 |
| 1993 | 387億 | 2007 | 678億 | 2021 | 1,475億 |
| 1994 | 381億 | 2008 | 730億 | 2022 | 1,607億 |
| 1995 | 394億 | 2009 | 775億 | 2023 | 1,693億 |
| 1996 | 400億 | 2010 | 866億 | 2024 | 1,783億 |
| 1997 | 408億 | 2011 | 894億 | 2025 | 1,849億 |
| 1998 | 424億 | 2012 | 858億 | 2026 | 1,920億 |