Year | Simple Mean | Median Method | Jackknife Method |
1986 | −0.76 | −0.77 | −0.79 |
1987 | 0.27 | 0.26 | 0.28 |
1988 | −0.12 | −0.13 | −0.13 |
1989 | −0.55 | −0.56 | −0.57 |
1990 | 0.01 | 0 | 0.01 |
1991 | −0.11 | −0.12 | −0.12 |
1992 | −0.29 | −0.3 | −0.3 |
1993 | −0.41 | −0.42 | −0.43 |
1994 | −0.58 | −0.59 | −0.6 |
1995 | −0.76 | −0.77 | −0.79 |
1996 | 0.03 | 0.02 | 0.03 |
1997 | −0.12 | −0.13 | −0.13 |
1998 | 0.56 | 0.55 | 0.58 |
1999 | −0.02 | −0.03 | −0.02 |
2000 | 0.23 | 0.22 | 0.24 |
2001 | 0.25 | 0.24 | 0.26 |
2002 | 0.16 | 0.15 | 0.16 |
2003 | 0.36 | 0.35 | 0.37 |
2004 | 0.01 | 0 | 0.01 |
2005 | 0.35 | 0.34 | 0.36 |
2006 | 0.35 | 0.34 | 0.36 |
2007 | −0.13 | −0.14 | −0.14 |
2008 | 0.3 | 0.29 | 0.31 |
2009 | 0.5 | 0.49 | 0.52 |
2010 | 0.96 | 0.95 | 0.99 |
2011 | 0.13 | 0.12 | 0.13 |
2012 | −0.15 | −0.16 | −0.16 |
2013 | 0.05 | 0.04 | 0.05 |
2014 | −0.3 | −0.31 | −0.31 |
2015 | −0.16 | −0.17 | −0.17 |