表を表示
| 1980 | 751 | 1996 | 1,017 | 2012 | 1,220 |
| 1981 | 901 | 1997 | 679 | 2013 | 1,393 |
| 1982 | 848 | 1998 | 524 | 2014 | 1,500 |
| 1983 | 775 | 1999 | 550 | 2015 | 1,307 |
| 1984 | 787 | 2000 | 533 | 2016 | 1,443 |
| 1985 | 811 | 2001 | 489 | 2017 | 1,571 |
| 1986 | 1,106 | 2002 | 533 | 2018 | 1,841 |
| 1987 | 1,076 | 2003 | 621 | 2019 | 1,950 |
| 1988 | 894 | 2004 | 663 | 2020 | 2,188 |
| 1989 | 864 | 2005 | 774 | 2021 | 2,381 |
| 1990 | 1,017 | 2006 | 805 | 2022 | 2,412 |
| 1991 | 891 | 2007 | 852 | 2023 | 3,014 |
| 1992 | 763 | 2008 | 1,082 | 2024 | 3,517 |
| 1993 | 1,000 | 2009 | 1,128 | 2025 | 4,085 |
| 1994 | 1,025 | 2010 | 1,049 | 2026 | 4,739 |
| 1995 | 794 | 2011 | 1,229 | | |
表を表示
| 1980 | 31 | 1996 | 2,240 | 2012 | 2.33万 |
| 1981 | 35 | 1997 | 3,089 | 2013 | 2.57万 |
| 1982 | 35 | 1998 | 3,607 | 2014 | 2.77万 |
| 1983 | 33 | 1999 | 3,918 | 2015 | 2.89万 |
| 1984 | 35 | 2000 | 4,252 | 2016 | 3.2万 |
| 1985 | 36 | 2001 | 4,327 | 2017 | 3.41万 |
| 1986 | 43 | 2002 | 4,841 | 2018 | 3.82万 |
| 1987 | 58 | 2003 | 5,806 | 2019 | 4.27万 |
| 1988 | 77 | 2004 | 6,561 | 2020 | 4.7万 |
| 1989 | 108 | 2005 | 8,174 | 2021 | 4.93万 |
| 1990 | 146 | 2006 | 1万 | 2022 | 5.61万 |
| 1991 | 180 | 2007 | 1.15万 | 2023 | 6.83万 |
| 1992 | 245 | 2008 | 1.59万 | 2024 | 7.96万 |
| 1993 | 430 | 2009 | 1.83万 | 2025 | 8.86万 |
| 1994 | 751 | 2010 | 1.94万 | 2026 | 9.85万 |
| 1995 | 1,128 | 2011 | 2.17万 | | |
表を表示
| 1980 | 2万 | 1996 | 1.28万 | 2012 | 1.6万 |
| 1981 | 1.76万 | 1997 | 1.27万 | 2013 | 1.65万 |
| 1982 | 1.77万 | 1998 | 1.28万 | 2014 | 1.7万 |
| 1983 | 1.66万 | 1999 | 1.28万 | 2015 | 1.7万 |
| 1984 | 1.53万 | 2000 | 1.27万 | 2016 | 1.76万 |
| 1985 | 1.62万 | 2001 | 1.28万 | 2017 | 1.8万 |
| 1986 | 1.49万 | 2002 | 1.28万 | 2018 | 1.85万 |
| 1987 | 1.41万 | 2003 | 1.33万 | 2019 | 1.86万 |
| 1988 | 1.39万 | 2004 | 1.34万 | 2020 | 1.87万 |
| 1989 | 1.4万 | 2005 | 1.4万 | 2021 | 1.87万 |
| 1990 | 1.33万 | 2006 | 1.49万 | 2022 | 1.84万 |
| 1991 | 1.31万 | 2007 | 1.5万 | 2023 | 1.81万 |
| 1992 | 1.28万 | 2008 | 1.59万 | 2024 | 1.79万 |
| 1993 | 1.28万 | 2009 | 1.6万 | 2025 | 1.79万 |
| 1994 | 1.28万 | 2010 | 1.59万 | 2026 | 1.82万 |
| 1995 | 1.28万 | 2011 | 1.59万 | | |