| Similarity | Rank | |
|---|---|---|
| 2006 | 0.992 | 1538 |
| 2004 | 0.990 | 2062 |
| 2007 | 0.986 | 1267 |
| 2002 | 0.982 | 2628 |
| 2003 | 0.982 | 2268 |
| 2008 | 0.970 | 1035 |
| 2001 | 0.969 | 2615 |
| 2009 | 0.967 | 927 |
| 1999 | 0.963 | 3420 |
| 1998 | 0.951 | 3724 |
| 1997 | 0.944 | 4165 |
| 2010 | 0.940 | 709 |
| 1996 | 0.932 | 4296 |
| 1995 | 0.929 | 4621 |
| 2011 | 0.914 | 635 |
| 1994 | 0.911 | 4973 |
| 1993 | 0.908 | 5505 |
| 1992 | 0.906 | 5489 |
| 2000 | 0.902 | 2056 |
| 1990 | 0.895 | 5524 |
| 1991 | 0.894 | 5992 |
| 1988 | 0.888 | 7071 |
| 1989 | 0.883 | 6451 |
| 1987 | 0.881 | 7465 |
| 1986 | 0.872 | 7315 |