表を表示
| 1980 | 1,256 | 1996 | 3,179 | 2012 | 6,596 |
| 1981 | 1,088 | 1997 | 3,162 | 2013 | 6,667 |
| 1982 | 1,107 | 1998 | 2,972 | 2014 | 7,122 |
| 1983 | 1,180 | 1999 | 3,283 | 2015 | 6,141 |
| 1984 | 1,130 | 2000 | 3,388 | 2016 | 6,749 |
| 1985 | 1,015 | 2001 | 3,189 | 2017 | 7,105 |
| 1986 | 1,327 | 2002 | 3,092 | 2018 | 7,408 |
| 1987 | 2,005 | 2003 | 4,206 | 2019 | 7,159 |
| 1988 | 2,512 | 2004 | 4,880 | 2020 | 6,311 |
| 1989 | 2,706 | 2005 | 5,344 | 2021 | 7,808 |
| 1990 | 2,880 | 2006 | 5,292 | 2022 | 8,329 |
| 1991 | 2,799 | 2007 | 5,529 | 2023 | 7,826 |
| 1992 | 2,810 | 2008 | 5,503 | 2024 | 7,678 |
| 1993 | 2,753 | 2009 | 5,083 | 2025 | 7,662 |
| 1994 | 2,885 | 2010 | 6,216 | 2026 | 8,490 |
| 1995 | 3,176 | 2011 | 7,287 | | |
表を表示
| 1980 | 939 | 1996 | 1.05万 | 2012 | 5.04万 |
| 1981 | 962 | 1997 | 1.15万 | 2013 | 5.6万 |
| 1982 | 1,186 | 1998 | 1.25万 | 2014 | 6.39万 |
| 1983 | 1,365 | 1999 | 1.52万 | 2015 | 6.22万 |
| 1984 | 1,715 | 2000 | 1.73万 | 2016 | 7.36万 |
| 1985 | 2,195 | 2001 | 1.86万 | 2017 | 7.35万 |
| 1986 | 2,463 | 2002 | 1.96万 | 2018 | 7.56万 |
| 1987 | 3,194 | 2003 | 2.08万 | 2019 | 7.7万 |
| 1988 | 4,794 | 2004 | 2.29万 | 2020 | 7.23万 |
| 1989 | 5,138 | 2005 | 2.73万 | 2021 | 8.66万 |
| 1990 | 5,342 | 2006 | 3.09万 | 2022 | 10.3万 |
| 1991 | 5,863 | 2007 | 3.39万 | 2023 | 10.6万 |
| 1992 | 6,252 | 2008 | 3.76万 | 2024 | 10.4万 |
| 1993 | 7,008 | 2009 | 3.64万 | 2025 | 10.3万 |
| 1994 | 7,742 | 2010 | 4.22万 | 2026 | 11万 |
| 1995 | 8,802 | 2011 | 4.98万 | | |
表を表示
| 1980 | 2.53万 | 1996 | 5.18万 | 2012 | 6.51万 |
| 1981 | 2.68万 | 1997 | 5.43万 | 2013 | 7.12万 |
| 1982 | 3万 | 1998 | 5.23万 | 2014 | 7.42万 |
| 1983 | 3.2万 | 1999 | 5.54万 | 2015 | 6.96万 |
| 1984 | 3.29万 | 2000 | 5.68万 | 2016 | 7.36万 |
| 1985 | 3.42万 | 2001 | 5.7万 | 2017 | 7.55万 |
| 1986 | 3.58万 | 2002 | 6万 | 2018 | 7.76万 |
| 1987 | 3.97万 | 2003 | 6.22万 | 2019 | 7.88万 |
| 1988 | 4.73万 | 2004 | 6.2万 | 2020 | 7.09万 |
| 1989 | 4.77万 | 2005 | 6.39万 | 2021 | 7.82万 |
| 1990 | 5.01万 | 2006 | 6.65万 | 2022 | 8.12万 |
| 1991 | 5.16万 | 2007 | 6.9万 | 2023 | 8.24万 |
| 1992 | 5.01万 | 2008 | 6.98万 | 2024 | 7.86万 |
| 1993 | 5.07万 | 2009 | 5.87万 | 2025 | 7.71万 |
| 1994 | 4.9万 | 2010 | 6.33万 | 2026 | 7.97万 |
| 1995 | 5.18万 | 2011 | 6.63万 | | |