表を表示
| 1980 | 311 | 1996 | 611 | 2012 | 2,756 |
| 1981 | 326 | 1997 | 674 | 2013 | 2,766 |
| 1982 | 335 | 1998 | 722 | 2014 | 2,691 |
| 1983 | 353 | 1999 | 737 | 2015 | 2,929 |
| 1984 | 357 | 2000 | 780 | 2016 | 3,025 |
| 1985 | 359 | 2001 | 790 | 2017 | 3,278 |
| 1986 | 393 | 2002 | 837 | 2018 | 3,501 |
| 1987 | 460 | 2003 | 976 | 2019 | 3,435 |
| 1988 | 511 | 2004 | 1,086 | 2020 | 3,370 |
| 1989 | 497 | 2005 | 1,246 | 2021 | 3,392 |
| 1990 | 529 | 2006 | 1,314 | 2022 | 3,683 |
| 1991 | 459 | 2007 | 1,587 | 2023 | 3,726 |
| 1992 | 455 | 2008 | 1,991 | 2024 | 3,989 |
| 1993 | 484 | 2009 | 1,844 | 2025 | 4,394 |
| 1994 | 498 | 2010 | 2,191 | 2026 | 4,867 |
| 1995 | 586 | 2011 | 2,665 | | |
表を表示
| 1980 | 2,442 | 1996 | 2.1万 | 2012 | 13.9万 |
| 1981 | 2,827 | 1997 | 2.41万 | 2013 | 15.2万 |
| 1982 | 3,165 | 1998 | 2.77万 | 2014 | 16.6万 |
| 1983 | 3,565 | 1999 | 3.14万 | 2015 | 18.2万 |
| 1984 | 4,052 | 2000 | 3.4万 | 2016 | 20.1万 |
| 1985 | 4,441 | 2001 | 3.66万 | 2017 | 21.8万 |
| 1986 | 4,958 | 2002 | 4.1万 | 2018 | 22.8万 |
| 1987 | 5,963 | 2003 | 4.56万 | 2019 | 24.2万 |
| 1988 | 7,108 | 2004 | 4.94万 | 2020 | 24.4万 |
| 1989 | 8,072 | 2005 | 5.43万 | 2021 | 25万 |
| 1990 | 9,266 | 2006 | 6.05万 | 2022 | 27.8万 |
| 1991 | 1.04万 | 2007 | 7.01万 | 2023 | 30.4万 |
| 1992 | 1.18万 | 2008 | 8万 | 2024 | 33.5万 |
| 1993 | 1.35万 | 2009 | 8.82万 | 2025 | 37.1万 |
| 1994 | 1.56万 | 2010 | 10.2万 | 2026 | 41.3万 |
| 1995 | 1.84万 | 2011 | 12.1万 | | |
表を表示
| 1980 | 2.82万 | 1996 | 7.38万 | 2012 | 18.1万 |
| 1981 | 3.12万 | 1997 | 7.66万 | 2013 | 18.5万 |
| 1982 | 3.29万 | 1998 | 7.93万 | 2014 | 19万 |
| 1983 | 3.45万 | 1999 | 8.26万 | 2015 | 20万 |
| 1984 | 3.62万 | 2000 | 8.6万 | 2016 | 21.3万 |
| 1985 | 3.67万 | 2001 | 8.93万 | 2017 | 22.2万 |
| 1986 | 3.84万 | 2002 | 9.5万 | 2018 | 22.7万 |
| 1987 | 4.46万 | 2003 | 10.1万 | 2019 | 23.6万 |
| 1988 | 4.98万 | 2004 | 10.6万 | 2020 | 22.8万 |
| 1989 | 5.16万 | 2005 | 11万 | 2021 | 21.9万 |
| 1990 | 5.56万 | 2006 | 11.5万 | 2022 | 22.8万 |
| 1991 | 5.85万 | 2007 | 12.6万 | 2023 | 23.8万 |
| 1992 | 6.05万 | 2008 | 13.7万 | 2024 | 25.1万 |
| 1993 | 6.35万 | 2009 | 14.4万 | 2025 | 26.8万 |
| 1994 | 6.58万 | 2010 | 15.7万 | 2026 | 28.7万 |
| 1995 | 7.01万 | 2011 | 17.2万 | | |