| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.06 | 71 |
| 2015 | 1.15 | 92 |
| 2014 | 0.04 | 115 |
| 2013 | -.14 | 121 |
| 2012 | 0.13 | 114 |
| 2011 | -.14 | 117 |
| 2010 | 0.34 | 118 |
| 2009 | -3.95 | 126 |
| 2008 | -.1 | 110 |
| 2007 | 1.32 | 111 |
| 2006 | 2.61 | 79 |
| 2005 | 3.41 | 71 |
| 2004 | 4.38 | 56 |
| 2003 | 1.06 | 97 |
| 2002 | 1.12 | 88 |
| 2001 | -.13 | 108 |
| 2000 | 0.05 | 97 |
| 1999 | -.45 | 96 |
| 1998 | 1.98 | 78 |
| 1997 | 2.52 | 66 |
| 1996 | 1.88 | 84 |
| 1995 | 1.15 | 74 |
| 1994 | 6.3 | 17 |
| 1993 | -1.19 | 77 |
| 1992 | 2.23 | 38 |
| 1991 | 1.36 | 54 |
| 1990 | 0.64 | 52 |
| 1989 | 0.26 | 62 |
| 1988 | -1.88 | 72 |
| 1987 | -2.03 | 68 |
| 1986 | 6.99 | 17 |