Graph
Year | Totals | Observation hours |
---|---|---|
1997 | 1427 | 63:45 |
1998 | 10481 | 48:00 |
1999 | 1018 | 79:45 |
2000 | 2186 | 114:15 |
2001 | 16634 | 130:55 |
2002 | 9845 | 311:10 |
2003 | 18737 | 434:00 |
2004 | 16435 | 539:15 |
2005 | 27506 | 741:30 |
2006 | 52377 | 671:30 |
2007 | 14114 | 742:30 |
2008 | 53209 | 700:00 |
2009 | 21415 | 629:45 |
2010 | 52545 | 570:15 |
2011 | 42665 | 520:15 |
2012 | 32034 | 543:15 |
2013 | 55262 | 410:30 |
2014 | 83095 | 500:15 |
2015 | 16966 | 683:45 |
2016 | 31172 | 688:45 |
2017 | 71576 | 671:00 |
2018 | 50116 | 739:00 |
2019 | 46414 | 737:00 |
2020 | 66259 | 795:00 |
2021 | 74179 | 787:15 |
2022 | 67527 | 648:40 |
2023 | 6 | 9:00 |