Graph
Year | Totals | Observation hours |
---|---|---|
1997 | 715 | 63:45 |
1998 | 1349 | 48:00 |
1999 | 791 | 79:45 |
2000 | 2768 | 114:15 |
2001 | 8206 | 130:55 |
2002 | 2994 | 311:10 |
2003 | 7481 | 434:00 |
2004 | 3655 | 539:15 |
2005 | 19727 | 741:30 |
2006 | 28021 | 671:30 |
2007 | 20519 | 742:30 |
2008 | 26299 | 700:00 |
2009 | 5799 | 629:45 |
2010 | 7923 | 570:15 |
2011 | 8055 | 520:15 |
2012 | 9504 | 543:15 |
2013 | 8260 | 410:30 |
2014 | 26718 | 500:15 |
2015 | 6698 | 683:45 |
2016 | 3145 | 688:45 |
2017 | 9347 | 671:00 |
2018 | 16959 | 739:00 |
2019 | 38677 | 737:00 |
2020 | 55804 | 795:00 |
2021 | 567 | 225:45 |