References | Sampling period | Relationship |
( | 1989 | Yes |
( | 1985-1991 | Yes |
( | 1986 | Yes |
( | 1986 | No |
( | 1989-1992 | No |
( | 1990-1993 | Yes |
( | 1984-1990 | No |
( | 1984-1996 | Yes |
( | 1992-1994 | Yes |
( | 1996 | Yes |
( | 1991-1997 | Yes |
( | 1994-1997 | Yes |
( | 1990-1994 | Yes |
( | 1989-1994 | Yes |
( | 1989 | Yes |
( | - | Yes |
( | 2005 & forecast 2006-2010 | Yes |
( | - | No |
( | 1995-2008 | Yes |
( | 1984-2009 | Yes |
( | 2002-2010 | No |
( | 1993-2009 | Yes |
( | 2003-2014 | Yes |
( | 1970s-2010s | Yes |
( | - | Yes |
( | 1984-2009 | Yes |
( | - | Yes |
( | 2010-2015 | Yes |
( | 2003-2012 | Yes |
( | 2010-2015 | Yes |
( | 1998-2002 | Yes |
( | 2013-2014 | Yes |
( | 2012-2018 | Yes |