Graph
Year | Totals | Observation hours |
---|---|---|
2000 | 675 | 93:00 |
2001 | 6243 | 287:00 |
2002 | 6620 | 316:00 |
2003 | 15192 | 382:42 |
2004 | 6244 | 342:37 |
2005 | 28181 | 554:39 |
2006 | 20211 | 657:43 |
2007 | 46161 | 725:19 |
2008 | 52987 | 1488:17 |
2009 | 23799 | 799:54 |
2010 | 27757 | 900:27 |
2011 | 22544 | 834:45 |
2012 | 33619 | 840:54 |
2013 | 33498 | 890:41 |
2014 | 194323 | 864:15 |
2015 | 32105 | 727:16 |
2016 | 14585 | 659:29 |
2017 | 31462 | 777:46 |
2018 | 140246 | 766:48 |
2019 | 28459 | 683:31 |
2020 | 73730 | 839:09 |
2021 | 199060 | 921:00 |