表を表示
| 1980 | 271 | 1996 | 401 | 2012 | 1,426 |
| 1981 | 274 | 1997 | 416 | 2013 | 1,425 |
| 1982 | 278 | 1998 | 414 | 2014 | 1,542 |
| 1983 | 296 | 1999 | 442 | 2015 | 1,567 |
| 1984 | 281 | 2000 | 443 | 2016 | 1,685 |
| 1985 | 302 | 2001 | 450 | 2017 | 1,920 |
| 1986 | 314 | 2002 | 469 | 2018 | 1,930 |
| 1987 | 345 | 2003 | 544 | 2019 | 1,999 |
| 1988 | 356 | 2004 | 624 | 2020 | 1,862 |
| 1989 | 350 | 2005 | 710 | 2021 | 2,181 |
| 1990 | 371 | 2006 | 802 | 2022 | 2,280 |
| 1991 | 306 | 2007 | 1,022 | 2023 | 2,434 |
| 1992 | 319 | 2008 | 993 | 2024 | 2,592 |
| 1993 | 303 | 2009 | 1,095 | 2025 | 2,675 |
| 1994 | 348 | 2010 | 1,348 | 2026 | 2,813 |
| 1995 | 375 | 2011 | 1,445 | | |
表を表示
| 1980 | 2,140 | 1996 | 1.42万 | 2012 | 7.76万 |
| 1981 | 2,455 | 1997 | 1.55万 | 2013 | 8.62万 |
| 1982 | 2,683 | 1998 | 1.74万 | 2014 | 9.43万 |
| 1983 | 3,052 | 1999 | 1.92万 | 2015 | 10.3万 |
| 1984 | 3,341 | 2000 | 2.02万 | 2016 | 11.3万 |
| 1985 | 3,683 | 2001 | 2.15万 | 2017 | 12.4万 |
| 1986 | 4,026 | 2002 | 2.27万 | 2018 | 13.5万 |
| 1987 | 4,473 | 2003 | 2.5万 | 2019 | 14.2万 |
| 1988 | 5,190 | 2004 | 2.8万 | 2020 | 13.8万 |
| 1989 | 5,830 | 2005 | 3.15万 | 2021 | 16.3万 |
| 1990 | 6,660 | 2006 | 3.63万 | 2022 | 18.3万 |
| 1991 | 7,492 | 2007 | 4.11万 | 2023 | 20.2万 |
| 1992 | 8,430 | 2008 | 4.56万 | 2024 | 21.9万 |
| 1993 | 9,500 | 2009 | 5.19万 | 2025 | 23.7万 |
| 1994 | 1.09万 | 2010 | 6.14万 | 2026 | 26万 |
| 1995 | 1.26万 | 2011 | 6.93万 | | |
表を表示
| 1980 | 3.44万 | 1996 | 5.71万 | 2012 | 11.6万 |
| 1981 | 3.56万 | 1997 | 5.83万 | 2013 | 12.2万 |
| 1982 | 3.6万 | 1998 | 6.07万 | 2014 | 13万 |
| 1983 | 3.78万 | 1999 | 6.48万 | 2015 | 13.8万 |
| 1984 | 3.83万 | 2000 | 6.61万 | 2016 | 14.8万 |
| 1985 | 3.94万 | 2001 | 6.8万 | 2017 | 15.6万 |
| 1986 | 4.03万 | 2002 | 6.93万 | 2018 | 16.4万 |
| 1987 | 4.1万 | 2003 | 7.35万 | 2019 | 16.9万 |
| 1988 | 4.39万 | 2004 | 7.79万 | 2020 | 15.8万 |
| 1989 | 4.55万 | 2005 | 8.28万 | 2021 | 17.2万 |
| 1990 | 4.7万 | 2006 | 8.8万 | 2022 | 18.3万 |
| 1991 | 4.64万 | 2007 | 9.34万 | 2023 | 19.5万 |
| 1992 | 4.8万 | 2008 | 9.49万 | 2024 | 20.7万 |
| 1993 | 4.92万 | 2009 | 10.1万 | 2025 | 22万 |
| 1994 | 5.14万 | 2010 | 10.8万 | 2026 | 23.3万 |
| 1995 | 5.42万 | 2011 | 11.2万 | | |