表を表示
| 1980 | 1.06万 | 1996 | 1.28万 | 2012 | 2.64万 |
| 1981 | 1.15万 | 1997 | 1.29万 | 2013 | 2.7万 |
| 1982 | 1.17万 | 1998 | 1.21万 | 2014 | 2.65万 |
| 1983 | 1.16万 | 1999 | 1.27万 | 2015 | 2.37万 |
| 1984 | 1.16万 | 2000 | 1.48万 | 2016 | 2.38万 |
| 1985 | 1.06万 | 2001 | 1.45万 | 2017 | 2.48万 |
| 1986 | 8,023 | 2002 | 1.41万 | 2018 | 2.63万 |
| 1987 | 8,391 | 2003 | 1.51万 | 2019 | 2.73万 |
| 1988 | 1万 | 2004 | 1.66万 | 2020 | 2.43万 |
| 1989 | 1.01万 | 2005 | 1.87万 | 2021 | 2.71万 |
| 1990 | 1.06万 | 2006 | 2.01万 | 2022 | 3.05万 |
| 1991 | 1.07万 | 2007 | 2.18万 | 2023 | 2.93万 |
| 1992 | 1.1万 | 2008 | 2.43万 | 2024 | 2.97万 |
| 1993 | 1.18万 | 2009 | 2.03万 | 2025 | 2.93万 |
| 1994 | 1.23万 | 2010 | 2.18万 | 2026 | 2.96万 |
| 1995 | 1.27万 | 2011 | 2.5万 | | |
表を表示
| 1980 | 4,005 | 1996 | 4,821 | 2012 | 9,941 |
| 1981 | 4,336 | 1997 | 4,869 | 2013 | 1.01万 |
| 1982 | 4,399 | 1998 | 4,534 | 2014 | 9,946 |
| 1983 | 4,358 | 1999 | 4,786 | 2015 | 8,924 |
| 1984 | 4,376 | 2000 | 5,572 | 2016 | 8,949 |
| 1985 | 3,991 | 2001 | 5,446 | 2017 | 9,319 |
| 1986 | 3,017 | 2002 | 5,292 | 2018 | 9,898 |
| 1987 | 3,155 | 2003 | 5,678 | 2019 | 1.02万 |
| 1988 | 3,764 | 2004 | 6,258 | 2020 | 9,153 |
| 1989 | 3,790 | 2005 | 7,042 | 2021 | 1.02万 |
| 1990 | 3,990 | 2006 | 7,552 | 2022 | 1.15万 |
| 1991 | 4,019 | 2007 | 8,196 | 2023 | 1.1万 |
| 1992 | 4,130 | 2008 | 9,133 | 2024 | 1.12万 |
| 1993 | 4,426 | 2009 | 7,630 | 2025 | 1.1万 |
| 1994 | 4,616 | 2010 | 8,204 | 2026 | 1.11万 |
| 1995 | 4,760 | 2011 | 9,412 | | |
表を表示
| 1980 | 8,196 | 1996 | 8,564 | 2012 | 8,821 |
| 1981 | 8,100 | 1997 | 8,537 | 2013 | 8,960 |
| 1982 | 8,317 | 1998 | 8,718 | 2014 | 8,910 |
| 1983 | 8,605 | 1999 | 8,998 | 2015 | 8,761 |
| 1984 | 8,673 | 2000 | 9,379 | 2016 | 8,755 |
| 1985 | 8,306 | 2001 | 9,268 | 2017 | 8,715 |
| 1986 | 8,062 | 2002 | 8,915 | 2018 | 8,882 |
| 1987 | 7,689 | 2003 | 8,807 | 2019 | 9,182 |
| 1988 | 7,864 | 2004 | 8,745 | 2020 | 8,707 |
| 1989 | 7,667 | 2005 | 8,653 | 2021 | 8,892 |
| 1990 | 7,867 | 2006 | 8,526 | 2022 | 9,315 |
| 1991 | 7,725 | 2007 | 8,532 | 2023 | 9,355 |
| 1992 | 8,141 | 2008 | 8,537 | 2024 | 9,556 |
| 1993 | 8,532 | 2009 | 8,198 | 2025 | 9,662 |
| 1994 | 8,578 | 2010 | 8,204 | 2026 | 9,428 |
| 1995 | 8,516 | 2011 | 8,597 | | |