Graph
Year | Totals | Observation hours |
---|---|---|
1997 | 1202 | 63:45 |
1998 | 1920 | 48:00 |
1999 | 187 | 79:45 |
2000 | 990 | 114:15 |
2001 | 7534 | 130:55 |
2002 | 4182 | 311:10 |
2003 | 24034 | 434:00 |
2004 | 17539 | 539:15 |
2005 | 12595 | 741:30 |
2006 | 9812 | 671:30 |
2007 | 10049 | 742:30 |
2008 | 20889 | 700:00 |
2009 | 12791 | 629:45 |
2010 | 10799 | 570:15 |
2011 | 10697 | 520:15 |
2012 | 10838 | 543:15 |
2013 | 7368 | 410:30 |
2014 | 18242 | 500:15 |
2015 | 8883 | 683:45 |
2016 | 9241 | 688:45 |
2017 | 12154 | 671:00 |
2018 | 9866 | 739:00 |
2019 | 89366 | 737:00 |
2020 | 21389 | 795:00 |
2021 | 23962 | 787:15 |
2022 | 9154 | 311:35 |