Graph
Year | Totals | Observation hours |
---|---|---|
1997 | 187 | 66:45 |
1998 | 424 | 46:00 |
1999 | 257 | 79:15 |
2000 | 55 | 114:15 |
2001 | 96 | 119:45 |
2002 | 1026 | 311:15 |
2003 | 919 | 433:15 |
2004 | 6511 | 539:15 |
2005 | 3196 | 741:30 |
2006 | 5534 | 671:30 |
2007 | 7495 | 742:30 |
2008 | 8352 | 700:00 |
2009 | 7752 | 629:45 |
2010 | 4920 | 570:15 |
2011 | 6051 | 520:15 |
2012 | 6736 | 543:15 |
2013 | 6625 | 410:30 |
2014 | 3140 | 500:15 |
2015 | 5313 | 683:45 |
2016 | 3497 | 688:45 |
2017 | 4146 | 671:00 |
2018 | 13985 | 739:00 |
2019 | 5894 | 731:30 |