表を表示
| 1980 | 3,557 | 1996 | 4,597 | 2012 | 1.06万 |
| 1981 | 4,461 | 1997 | 5,485 | 2013 | 1.11万 |
| 1982 | 3,162 | 1998 | 5,759 | 2014 | 1.13万 |
| 1983 | 2,519 | 1999 | 6,436 | 2015 | 9,915 |
| 1984 | 2,905 | 2000 | 7,468 | 2016 | 9,000 |
| 1985 | 3,015 | 2001 | 7,902 | 2017 | 9,543 |
| 1986 | 2,043 | 2002 | 7,935 | 2018 | 9,971 |
| 1987 | 2,195 | 2003 | 7,390 | 2019 | 1.03万 |
| 1988 | 2,631 | 2004 | 7,807 | 2020 | 8,744 |
| 1989 | 3,145 | 2005 | 8,626 | 2021 | 1.02万 |
| 1990 | 3,640 | 2006 | 9,457 | 2022 | 1.13万 |
| 1991 | 4,282 | 2007 | 1.01万 | 2023 | 1.37万 |
| 1992 | 4,873 | 2008 | 1.04万 | 2024 | 1.38万 |
| 1993 | 5,933 | 2009 | 8,347 | 2025 | 1.37万 |
| 1994 | 6,087 | 2010 | 9,633 | 2026 | 1.58万 |
| 1995 | 4,110 | 2011 | 1.06万 | | |
表を表示
| 1980 | 82 | 1996 | 3.49万 | 2012 | 14万 |
| 1981 | 109 | 1997 | 4.34万 | 2013 | 14.2万 |
| 1982 | 172 | 1998 | 5.26万 | 2014 | 15万 |
| 1983 | 302 | 1999 | 6.15万 | 2015 | 15.7万 |
| 1984 | 487 | 2000 | 7.06万 | 2016 | 16.8万 |
| 1985 | 773 | 2001 | 7.38万 | 2017 | 18.1万 |
| 1986 | 1,242 | 2002 | 7.66万 | 2018 | 19.2万 |
| 1987 | 3,005 | 2003 | 7.97万 | 2019 | 19.7万 |
| 1988 | 5,980 | 2004 | 8.81万 | 2020 | 18.8万 |
| 1989 | 7,741 | 2005 | 9.4万 | 2021 | 20.7万 |
| 1990 | 1.02万 | 2006 | 10.3万 | 2022 | 22.7万 |
| 1991 | 1.29万 | 2007 | 11万 | 2023 | 24.3万 |
| 1992 | 1.51万 | 2008 | 11.6万 | 2024 | 25.3万 |
| 1993 | 1.85万 | 2009 | 11.3万 | 2025 | 26.4万 |
| 1994 | 2.05万 | 2010 | 12.2万 | 2026 | 28万 |
| 1995 | 2.64万 | 2011 | 13.1万 | | |
表を表示
| 1980 | 15.4万 | 1996 | 15.4万 | 2012 | 18.2万 |
| 1981 | 16.5万 | 1997 | 16.3万 | 2013 | 18.2万 |
| 1982 | 16.1万 | 1998 | 17万 | 2014 | 18.4万 |
| 1983 | 15万 | 1999 | 17.3万 | 2015 | 18.7万 |
| 1984 | 15.2万 | 2000 | 17.9万 | 2016 | 18.8万 |
| 1985 | 15.2万 | 2001 | 17.6万 | 2017 | 19万 |
| 1986 | 14.3万 | 2002 | 17.3万 | 2018 | 19.2万 |
| 1987 | 14.3万 | 2003 | 17.3万 | 2019 | 18.9万 |
| 1988 | 14.2万 | 2004 | 17.7万 | 2020 | 17.2万 |
| 1989 | 14.4万 | 2005 | 17.8万 | 2021 | 18.1万 |
| 1990 | 14.8万 | 2006 | 18.4万 | 2022 | 18.7万 |
| 1991 | 15.1万 | 2007 | 18.5万 | 2023 | 19.1万 |
| 1992 | 15.4万 | 2008 | 18.4万 | 2024 | 19.2万 |
| 1993 | 15.6万 | 2009 | 16.9万 | 2025 | 19.1万 |
| 1994 | 16万 | 2010 | 17.5万 | 2026 | 19.3万 |
| 1995 | 14.8万 | 2011 | 17.9万 | | |