| | 1986 | | 1987 | | 1988 | | 1989 | | 1990 | | | 1991 | | 1992 | | 1993 | | 1994 | | 1995 | | | 1996 | | 1997 | | 1998 | | 1999 | | 2000 | | | 2001 | | 2002 | | 2003 | | 2004 | | 2005 | | | 2006 | | 2007 | | 2008 | | |
|
| | | | | 8.42 | 7.57 | 0.48 | 1.86 | | 7.58 | 6.80 | 0.45 | 1.61 | | 6.37 | 5.63 | 0.39 | 1.33 | | 5.82 | 5.14 | 0.36 | 1.21 | | 5.41 | 4.82 | 0.35 | 1.09 | | | | | | 4.80 | 4.22 | 0.31 | 0.95 | | 4.21 | 3.61 | 0.29 | 0.84 | | 3.68 | 2.99 | 0.25 | 0.69 | | 2.96 | 2.34 | 0.21 | 0.50 | | 2.34 | 1.83 | 0.17 | 0.42 | | | | | | 2.09 | 1.59 | 0.16 | 0.40 | | 1.79 | 1.33 | 0.15 | 0.35 | | 1.60 | 1.18 | 0.13 | 0.30 | | 1.46 | 1.02 | 0.13 | 0.29 | | 1.31 | 0.89 | 0.12 | 0.25 | | | | | | 1.14 | 0.73 | 0.11 | 0.22 | | 1.02 | 0.60 | 0.10 | 0.16 | | 0.93 | 0.55 | 0.09 | 0.13 | | 0.85 | 0.49 | 0.08 | 0.16 | | 0.80 | 0.45 | 0.08 | 0.16 | | | | | | 0.75 | 0.39 | 0.08 | 0.15 | | 0.67 | 0.32 | 0.07 | 0.14 | | 0.61 | | | | | | | | | | | | |