Graph
Year | Totals | Observation hours |
---|---|---|
2006 | 5334 | 23:40 |
2007 | 3722 | 71:05 |
2008 | 9099 | 94:25 |
2009 | 24414 | 91:45 |
2010 | 8317 | 159:55 |
2011 | 21848 | 208:42 |
2012 | 16903 | 196:45 |
2013 | 21231 | 239:26 |
2014 | 13311 | 218:15 |
2015 | 4210 | 145:35 |
2016 | 10562 | 217:52 |
2017 | 21723 | 191:09 |
2018 | 17541 | 243:43 |
2019 | 3783 | 191:56 |
2020 | 9810 | 108:23 |
2021 | 20732 | 156:10 |
2022 | 34 | 25:42 |