表を表示
| 1980 | 28.2% | 1996 | 37% | 2012 | 37.7% |
| 1981 | 28.9% | 1997 | 37.6% | 2013 | 38.7% |
| 1982 | 29.4% | 1998 | 38.4% | 2014 | 39% |
| 1983 | 31.2% | 1999 | 38.7% | 2015 | 38.4% |
| 1984 | 31.3% | 2000 | 38% | 2016 | 37.9% |
| 1985 | 33% | 2001 | 38% | 2017 | 38% |
| 1986 | 33.6% | 2002 | 38.3% | 2018 | 38.9% |
| 1987 | 35.3% | 2003 | 38% | 2019 | 39% |
| 1988 | 35.3% | 2004 | 38.7% | 2020 | 41.4% |
| 1989 | 37.1% | 2005 | 39.7% | 2021 | 42.8% |
| 1990 | 37.2% | 2006 | 40.5% | 2022 | 41.7% |
| 1991 | 38% | 2007 | 41.1% | 2023 | 42.1% |
| 1992 | 39.6% | 2008 | 36.8% | 2024 | 42.3% |
| 1993 | 39.4% | 2009 | 34.8% | 2025 | 42.2% |
| 1994 | 38.5% | 2010 | 36.4% | 2026 | 43.2% |
| 1995 | 37.3% | 2011 | 36.2% | | |
表を表示
| 1980 | 280億 | 1996 | 1,809億 | 2012 | 3,910億 |
| 1981 | 328億 | 1997 | 1,953億 | 2013 | 3,966億 |
| 1982 | 382億 | 1998 | 2,131億 | 2014 | 4,050億 |
| 1983 | 463億 | 1999 | 2,305億 | 2015 | 4,176億 |
| 1984 | 521億 | 2000 | 2,458億 | 2016 | 4,253億 |
| 1985 | 612億 | 2001 | 2,661億 | 2017 | 4,440億 |
| 1986 | 711億 | 2002 | 2,872億 | 2018 | 4,721億 |
| 1987 | 832億 | 2003 | 3,049億 | 2019 | 4,885億 |
| 1988 | 924億 | 2004 | 3,328億 | 2020 | 4,676億 |
| 1989 | 1,090億 | 2005 | 3,683億 | 2021 | 5,292億 |
| 1990 | 1,217億 | 2006 | 4,071億 | 2022 | 5,740億 |
| 1991 | 1,366億 | 2007 | 4,425億 | 2023 | 6,302億 |
| 1992 | 1,532億 | 2008 | 4,091億 | 2024 | 6,737億 |
| 1993 | 1,588億 | 2009 | 3,738億 | 2025 | 7,114億 |
| 1994 | 1,646億 | 2010 | 3,916億 | 2026 | 7,666億 |
| 1995 | 1,719億 | 2011 | 3,874億 | | |
表を表示
| 1980 | 30.2% | 1996 | 42.9% | 2012 | 49.2% |
| 1981 | 31.3% | 1997 | 41.5% | 2013 | 46.2% |
| 1982 | 34.9% | 1998 | 41% | 2014 | 45.1% |
| 1983 | 35.9% | 1999 | 40% | 2015 | 43.7% |
| 1984 | 36.7% | 2000 | 39.1% | 2016 | 42.1% |
| 1985 | 39.8% | 2001 | 38.4% | 2017 | 41% |
| 1986 | 39.6% | 2002 | 38.6% | 2018 | 41.5% |
| 1987 | 38.5% | 2003 | 38.4% | 2019 | 42% |
| 1988 | 38.7% | 2004 | 38.8% | 2020 | 51.4% |
| 1989 | 40.1% | 2005 | 38.4% | 2021 | 49.5% |
| 1990 | 41.1% | 2006 | 38.4% | 2022 | 46.3% |
| 1991 | 42.6% | 2007 | 39.2% | 2023 | 45.4% |
| 1992 | 43.9% | 2008 | 41.3% | 2024 | 45.5% |
| 1993 | 46.3% | 2009 | 46.1% | 2025 | 44.7% |
| 1994 | 44.8% | 2010 | 45.8% | 2026 | 45.3% |
| 1995 | 44.1% | 2011 | 45.9% | | |
表を表示
| 1980 | 300億 | 1996 | 2,096億 | 2012 | 5,101億 |
| 1981 | 355億 | 1997 | 2,153億 | 2013 | 4,735億 |
| 1982 | 453億 | 1998 | 2,277億 | 2014 | 4,681億 |
| 1983 | 533億 | 1999 | 2,379億 | 2015 | 4,749億 |
| 1984 | 611億 | 2000 | 2,534億 | 2016 | 4,732億 |
| 1985 | 738億 | 2001 | 2,693億 | 2017 | 4,803億 |
| 1986 | 837億 | 2002 | 2,896億 | 2018 | 5,034億 |
| 1987 | 909億 | 2003 | 3,079億 | 2019 | 5,267億 |
| 1988 | 1,013億 | 2004 | 3,336億 | 2020 | 5,808億 |
| 1989 | 1,178億 | 2005 | 3,569億 | 2021 | 6,115億 |
| 1990 | 1,345億 | 2006 | 3,858億 | 2022 | 6,371億 |
| 1991 | 1,531億 | 2007 | 4,222億 | 2023 | 6,802億 |
| 1992 | 1,697億 | 2008 | 4,598億 | 2024 | 7,250億 |
| 1993 | 1,866億 | 2009 | 4,944億 | 2025 | 7,535億 |
| 1994 | 1,916億 | 2010 | 4,938億 | 2026 | 8,033億 |
| 1995 | 2,031億 | 2011 | 4,910億 | | |