表を表示
| 1981 | 19.9% | 1997 | 20.5% | 2013 | 21% |
| 1982 | 16.3% | 1998 | 16.7% | 2014 | 20.8% |
| 1983 | 14.4% | 1999 | 17.8% | 2015 | 18.6% |
| 1984 | 14.2% | 2000 | 16.9% | 2016 | 22.6% |
| 1985 | 15.5% | 2001 | 13.4% | 2017 | 22.9% |
| 1986 | 14.4% | 2002 | 13.7% | 2018 | 20.7% |
| 1987 | 14.8% | 2003 | 16.4% | 2019 | 20.4% |
| 1988 | 15% | 2004 | 17.9% | 2020 | 20.7% |
| 1989 | 15% | 2005 | 17.2% | 2021 | 23.7% |
| 1990 | 14.5% | 2006 | 18.8% | 2022 | 21.7% |
| 1991 | 15.9% | 2007 | 21.3% | 2023 | 18.1% |
| 1992 | 16.2% | 2008 | 18.9% | 2024 | 17.4% |
| 1993 | 17.3% | 2009 | 18.8% | 2025 | 18.5% |
| 1994 | 16.4% | 2010 | 20.7% | 2026 | 17.7% |
| 1995 | 15.8% | 2011 | 22.4% | | |
| 1996 | 16.4% | 2012 | 21.4% | | |
表を表示
| 1981 | 358億 | 1997 | 2,812億 | 2013 | 4,553億 |
| 1982 | 323億 | 1998 | 2,161億 | 2014 | 4,787億 |
| 1983 | 328億 | 1999 | 2,330億 | 2015 | 4,500億 |
| 1984 | 385億 | 2000 | 2,251億 | 2016 | 5,731億 |
| 1985 | 437億 | 2001 | 1,756億 | 2017 | 6,198億 |
| 1986 | 486億 | 2002 | 1,775億 | 2018 | 5,998億 |
| 1987 | 609億 | 2003 | 2,073億 | 2019 | 5,909億 |
| 1988 | 727億 | 2004 | 2,382億 | 2020 | 5,642億 |
| 1989 | 824億 | 2005 | 2,470億 | 2021 | 6,936億 |
| 1990 | 895億 | 2006 | 2,880億 | 2022 | 6,221億 |
| 1991 | 1,147億 | 2007 | 3,585億 | 2023 | 5,494億 |
| 1992 | 1,353億 | 2008 | 3,166億 | 2024 | 5,649億 |
| 1993 | 1,666億 | 2009 | 3,184億 | 2025 | 6,273億 |
| 1994 | 1,750億 | 2010 | 3,765億 | 2026 | 6,339億 |
| 1995 | 1,800億 | 2011 | 4,377億 | | |
| 1996 | 2,084億 | 2012 | 4,422億 | | |
表を表示
| 1981 | 17.1% | 1997 | 14.1% | 2013 | 20% |
| 1982 | 16.7% | 1998 | 18.5% | 2014 | 17.3% |
| 1983 | 15.5% | 1999 | 17.1% | 2015 | 18% |
| 1984 | 13.3% | 2000 | 17.5% | 2016 | 18.3% |
| 1985 | 14.5% | 2001 | 18.2% | 2017 | 17.4% |
| 1986 | 12.7% | 2002 | 18.5% | 2018 | 18.4% |
| 1987 | 11.8% | 2003 | 19.6% | 2019 | 20.9% |
| 1988 | 11.7% | 2004 | 18.2% | 2020 | 29.9% |
| 1989 | 13% | 2005 | 16.2% | 2021 | 23.7% |
| 1990 | 13.8% | 2006 | 14.8% | 2022 | 28.3% |
| 1991 | 12.8% | 2007 | 13.9% | 2023 | 23.7% |
| 1992 | 13.5% | 2008 | 18.6% | 2024 | 23.2% |
| 1993 | 15.3% | 2009 | 17.3% | 2025 | 23.2% |
| 1994 | 15.4% | 2010 | 16.6% | 2026 | 22.9% |
| 1995 | 16.1% | 2011 | 18.6% | | |
| 1996 | 14.4% | 2012 | 18.3% | | |
表を表示
| 1981 | 308億 | 1997 | 1,944億 | 2013 | 4,335億 |
| 1982 | 331億 | 1998 | 2,394億 | 2014 | 3,962億 |
| 1983 | 353億 | 1999 | 2,230億 | 2015 | 4,356億 |
| 1984 | 361億 | 2000 | 2,329億 | 2016 | 4,621億 |
| 1985 | 408億 | 2001 | 2,389億 | 2017 | 4,709億 |
| 1986 | 427億 | 2002 | 2,392億 | 2018 | 5,318億 |
| 1987 | 484億 | 2003 | 2,475億 | 2019 | 6,078億 |
| 1988 | 566億 | 2004 | 2,422億 | 2020 | 8,161億 |
| 1989 | 714億 | 2005 | 2,331億 | 2021 | 6,933億 |
| 1990 | 856億 | 2006 | 2,269億 | 2022 | 8,105億 |
| 1991 | 922億 | 2007 | 2,348億 | 2023 | 7,213億 |
| 1992 | 1,133億 | 2008 | 3,124億 | 2024 | 7,532億 |
| 1993 | 1,474億 | 2009 | 2,925億 | 2025 | 7,892億 |
| 1994 | 1,642億 | 2010 | 3,014億 | 2026 | 8,184億 |
| 1995 | 1,832億 | 2011 | 3,640億 | | |
| 1996 | 1,827億 | 2012 | 3,773億 | | |