Year | MJ m2/d (Kcal m2/d) |
1993 | 19.2 (4589) |
1994 | 17.5 (4183) |
1995 | 19.2 (4589) |
1996 | 17.5 (4183) |
1997 | 17.3 (4135) |
1998 | 17.5 (4183) |
1999 | 18.4 (4398) |
2000 | 16.1 (3848) |
2001 | 19.6 (4684) |
2002 | 19.3 (4589) |
2003 | 18.3 (4374) |
2004 | 18.5 (4422) |
2005 | 18.8 (4483) |
2006 | 18.5 (4398) |
2007 | 18.1 (4326) |
2008 | 18.8 (4469) |
2009 | 18.3 4374) |
2010 | 18.7 (4469) |
2011 | 17.9 (4278) |
2012 | 17.9 (4278) |
2013 | 18.4 (4398) |
2014 | 18.5 (4422) |
2015 | 17.9 (4278) |
2016 | 18.5 (4422) |
2017 | 18.6 (4445) |
2018 | 17.9 (4278) |
2019 | 18.8 (4493) |