表を表示
| 1980 | 1.29万 | 1996 | 7,384 | 2012 | 1.5万 |
| 1981 | 1.06万 | 1997 | 7,444 | 2013 | 1.2万 |
| 1982 | 1.01万 | 1998 | 6,015 | 2014 | 8,928 |
| 1983 | 9,268 | 1999 | 7,115 | 2015 | 7,459 |
| 1984 | 8,319 | 2000 | 7,445 | 2016 | 7,526 |
| 1985 | 8,229 | 2001 | 6,515 | 2017 | 9,965 |
| 1986 | 6,453 | 2002 | 3,836 | 2018 | 1.12万 |
| 1987 | 5,752 | 2003 | 4,809 | 2019 | 9,961 |
| 1988 | 5,732 | 2004 | 5,936 | 2020 | 6,656 |
| 1989 | 5,817 | 2005 | 8,338 | 2021 | 4,936 |
| 1990 | 7,115 | 2006 | 1万 | 2022 | 5,991 |
| 1991 | 7,701 | 2007 | 1.12万 | 2023 | 6,017 |
| 1992 | 7,642 | 2008 | 1.39万 | 2024 | 6,686 |
| 1993 | 6,742 | 2009 | 9,544 | 2025 | 5,999 |
| 1994 | 6,163 | 2010 | 1.16万 | 2026 | 6,962 |
| 1995 | 6,876 | 2011 | 7,594 | | |
表を表示
| 1980 | 3,816 | 1996 | 2,670 | 2012 | 1.89万 |
| 1981 | 3,151 | 1997 | 2,840 | 2013 | 1.52万 |
| 1982 | 3,000 | 1998 | 2,812 | 2014 | 1.14万 |
| 1983 | 2,744 | 1999 | 3,300 | 2015 | 1.03万 |
| 1984 | 2,463 | 2000 | 3,813 | 2016 | 1.05万 |
| 1985 | 2,436 | 2001 | 3,942 | 2017 | 1.39万 |
| 1986 | 2,033 | 2002 | 4,874 | 2018 | 1.53万 |
| 1987 | 1,708 | 2003 | 6,174 | 2019 | 1.39万 |
| 1988 | 1,639 | 2004 | 7,746 | 2020 | 9,235 |
| 1989 | 1,742 | 2005 | 1.09万 | 2021 | 2.23万 |
| 1990 | 2,013 | 2006 | 1.32万 | 2022 | 2.88万 |
| 1991 | 2,161 | 2007 | 1.41万 | 2023 | 2.9万 |
| 1992 | 2,248 | 2008 | 1.7万 | 2024 | 3.24万 |
| 1993 | 2,156 | 2009 | 1.2万 | 2025 | 3.17万 |
| 1994 | 2,260 | 2010 | 1.47万 | 2026 | 4.42万 |
| 1995 | 2,380 | 2011 | 9,296 | | |
表を表示
| 1980 | 4.58万 | 1996 | 1.75万 | 2012 | 1.89万 |
| 1981 | 3.5万 | 1997 | 1.68万 | 2013 | 1.52万 |
| 1982 | 3.39万 | 1998 | 1.64万 | 2014 | 1.15万 |
| 1983 | 3.1万 | 1999 | 1.62万 | 2015 | 1.12万 |
| 1984 | 2.73万 | 2000 | 1.65万 | 2016 | 1.09万 |
| 1985 | 2.76万 | 2001 | 1.67万 | 2017 | 1.42万 |
| 1986 | 2.35万 | 2002 | 1.57万 | 2018 | 1.5万 |
| 1987 | 1.93万 | 2003 | 1.79万 | 2019 | 1.32万 |
| 1988 | 1.84万 | 2004 | 1.86万 | 2020 | 9,160 |
| 1989 | 1.88万 | 2005 | 2.01万 | 2021 | 1.15万 |
| 1990 | 2.07万 | 2006 | 1.98万 | 2022 | 1.04万 |
| 1991 | 2.4万 | 2007 | 2.06万 | 2023 | 1.14万 |
| 1992 | 2.24万 | 2008 | 2.01万 | 2024 | 1.17万 |
| 1993 | 2.08万 | 2009 | 1.88万 | 2025 | 1.34万 |
| 1994 | 2.11万 | 2010 | 1.94万 | 2026 | 1.42万 |
| 1995 | 1.75万 | 2011 | 9,860 | | |