Period ↓ | value | obs. status |
2019 | - | Missing value; data exist but were not collected (L) |
2018 | - | Missing value; data exist but were not collected (L) |
2017 | - | Missing value; data exist but were not collected (L) |
2016 | - | Missing value; data exist but were not collected (L) |
2015 | - | Missing value; data exist but were not collected (L) |
2014 | 3.70 | Normal value (A) |
2013 | 2.80 | Normal value (A) |
2012 | 3.00 | Normal value (A) |
2011 | 2.40 | Normal value (A) |
2010 | 2.00 | Normal value (A) |
2009 | 2.90 | Normal value (A) |
2008 | 3.10 | Normal value (A) |
2007 | 3.40 | Normal value (A) |
2006 | 3.40 | Normal value (A) |
2005 | 4.00 | Normal value (A) |
2004 | 3.00 | Normal value (A) |
2003 | - | Missing value; data exist but were not collected (L) |
2002 | - | Missing value; data exist but were not collected (L) |
2001 | 29.50 | Normal value (A) |
2000 | - | Missing value; data exist but were not collected (L) |
1999 | - | Missing value; data exist but were not collected (L) |
1998 | - | Missing value; data exist but were not collected (L) |
1997 | - | Missing value; data exist but were not collected (L) |
1996 | - | Missing value; data exist but were not collected (L) |
1995 | - | Missing value; data exist but were not collected (L) |
1994 | - | Missing value; data exist but were not collected (L) |
1993 | - | Missing value; data exist but were not collected (L) |
1992 | - | Missing value; data exist but were not collected (L) |
1991 | - | Missing value; data exist but were not collected (L) |
1990 | - | Missing value; data exist but were not collected (L) |
1989 | - | Missing value; data exist but were not collected (L) |
1988 | - | Missing value; data exist but were not collected (L) |
1987 | - | Missing value; data exist but were not collected (L) |
1986 | - | Missing value; data exist but were not collected (L) |
1985 | - | Missing value; data exist but were not collected (L) |