Graph
Year | Totals | Observation hours |
---|---|---|
2000 | 2158 | 93:00 |
2001 | 5016 | 287:00 |
2002 | 10335 | 316:00 |
2003 | 3657 | 382:42 |
2004 | 5483 | 342:37 |
2005 | 8676 | 554:39 |
2006 | 11963 | 657:43 |
2007 | 25896 | 725:19 |
2008 | 43617 | 1488:17 |
2009 | 12940 | 799:54 |
2010 | 34797 | 900:27 |
2011 | 22700 | 834:45 |
2012 | 33391 | 840:54 |
2013 | 24356 | 890:41 |
2014 | 28277 | 864:15 |
2015 | 13458 | 727:16 |
2016 | 22279 | 659:29 |
2017 | 32509 | 777:46 |
2018 | 28895 | 766:48 |
2019 | 19320 | 683:31 |
2020 | 11368 | 839:09 |
2021 | 15080 | 921:00 |
2022 | 21083 | 853:07 |