| Organisatie / activiteit | 04-2024 | 03-2024 | 02-2024 | 01-2024 | 2024 | 12-2023 | 11-2023 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | Totaal | Sterrenwacht Halley | 0 | 0 | 13 | 131 | 191 | 168 | 258 | 271 |
| Bezoek Halley | 35 | 33 | 28 | 34 | 130 | 32 | 49 | 0 | 475 | 407 | 514 | 316 | 430 | 364 | 532 | 797 | 485 | 467 | 330 | 402 | 6.118 | |
| Totaal | 35 | 33 | 28 | 34 | 130 | 32 | 49 | 469 | 475 | 407 | 527 | 447 | 621 | 532 | 790 | 1.068 | 485 | 467 | 330 | 402 | 7.150 |