| 年度 | クラス数 | 体験者数 |
| 1999 | 4 | 122 |
| 2000 | 16 | 535 |
| 2001 | 33 | 1129 |
| 2002 | 34 | 1305 |
| 2003 | 67 | 2301 |
| 2004 | 68 | 2313 |
| 2005 | 77 | 2464 |
| 2006 | 67 | 2290 |
| 2007 | 70 | 2126 |
| 2008 | 74 | 2365 |
| 2009 | 75 | 2380 |
| 2010 | 77 | 2472 |
| 2011 | 74 | 2411 |
| 2012 | 70 | 2243 |
| 2013 | 75 | 2446 |
| 2014 | 66 | 2038 |
| 2015 | 66 | 2251 |
| 2016 | 72 | 2149 |
| 2017 | 77 | 2335 |
| 2018 | 79 | 2405 |
| 2019 | 66 | 1957 |
| 2020 | 51 | 1655 |
| 2021 | 43 | 1224 |
| 2022 | 69 | 1900 |
| 2023 | 73 | 2052 |
| 2024 | 79 | 2342 |
| 2025 | 81 | 2454 |