表を表示
| 1980 | 413 | 1996 | 2,108 | 2012 | 8,720 |
| 1981 | 465 | 1997 | 2,554 | 2013 | 9,766 |
| 1982 | 535 | 1998 | 2,659 | 2014 | 1.08万 |
| 1983 | 560 | 1999 | 2,843 | 2015 | 1.18万 |
| 1984 | 646 | 2000 | 2,967 | 2016 | 1.24万 |
| 1985 | 738 | 2001 | 2,780 | 2017 | 1.34万 |
| 1986 | 836 | 2002 | 2,952 | 2018 | 1.48万 |
| 1987 | 770 | 2003 | 3,691 | 2019 | 1.54万 |
| 1988 | 898 | 2004 | 4,238 | 2020 | 9,803 |
| 1989 | 988 | 2005 | 3,960 | 2021 | 1.36万 |
| 1990 | 1,092 | 2006 | 5,269 | 2022 | 1.58万 |
| 1991 | 1,185 | 2007 | 6,128 | 2023 | 1.66万 |
| 1992 | 1,343 | 2008 | 7,338 | 2024 | 1.75万 |
| 1993 | 1,479 | 2009 | 7,451 | 2025 | 1.87万 |
| 1994 | 1,591 | 2010 | 8,087 | 2026 | 1.95万 |
| 1995 | 1,903 | 2011 | 8,078 | | |
表を表示
| 1980 | 3,114 | 1996 | 2.48万 | 2012 | 13.4万 |
| 1981 | 3,510 | 1997 | 3.01万 | 2013 | 15万 |
| 1982 | 3,837 | 1998 | 3.13万 | 2014 | 16.6万 |
| 1983 | 3,950 | 1999 | 3.35万 | 2015 | 18.2万 |
| 1984 | 4,557 | 2000 | 3.49万 | 2016 | 19.2万 |
| 1985 | 5,237 | 2001 | 3.56万 | 2017 | 20.6万 |
| 1986 | 5,976 | 2002 | 3.78万 | 2018 | 22.7万 |
| 1987 | 7,100 | 2003 | 4.72万 | 2019 | 23.7万 |
| 1988 | 7,888 | 2004 | 5.42万 | 2020 | 15.1万 |
| 1989 | 8,931 | 2005 | 5.07万 | 2021 | 21万 |
| 1990 | 1.04万 | 2006 | 6.74万 | 2022 | 24.3万 |
| 1991 | 1.21万 | 2007 | 7.84万 | 2023 | 25.6万 |
| 1992 | 1.42万 | 2008 | 9.39万 | 2024 | 26.9万 |
| 1993 | 1.62万 | 2009 | 9.54万 | 2025 | 28.8万 |
| 1994 | 1.84万 | 2010 | 10.4万 | 2026 | 30万 |
| 1995 | 2.24万 | 2011 | 12.4万 | | |
表を表示
| 1980 | 4.49万 | 1996 | 8.97万 | 2012 | 16.8万 |
| 1981 | 4.66万 | 1997 | 9.7万 | 2013 | 17.7万 |
| 1982 | 4.86万 | 1998 | 10.4万 | 2014 | 18.7万 |
| 1983 | 4.89万 | 1999 | 11万 | 2015 | 19.2万 |
| 1984 | 5.55万 | 2000 | 11.3万 | 2016 | 20万 |
| 1985 | 6.07万 | 2001 | 11.2万 | 2017 | 21.1万 |
| 1986 | 6.35万 | 2002 | 11.7万 | 2018 | 22.5万 |
| 1987 | 6.74万 | 2003 | 13.2万 | 2019 | 23.7万 |
| 1988 | 7.14万 | 2004 | 13.8万 | 2020 | 15.6万 |
| 1989 | 7.61万 | 2005 | 12万 | 2021 | 21.1万 |
| 1990 | 7.02万 | 2006 | 14.6万 | 2022 | 23.7万 |
| 1991 | 7.17万 | 2007 | 15.4万 | 2023 | 24.5万 |
| 1992 | 7.42万 | 2008 | 16.5万 | 2024 | 24.8万 |
| 1993 | 7.62万 | 2009 | 14.9万 | 2025 | 25.6万 |
| 1994 | 7.98万 | 2010 | 15.6万 | 2026 | 26万 |
| 1995 | 8.41万 | 2011 | 16.7万 | | |