| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2014 | 3.025 | 98 |
| 2013 | 2.865 | 102 |
| 2012 | 1.607 | 136 |
| 2011 | 0.653 | 159 |
| 2010 | 2.784 | 118 |
| 2009 | 8.99 | 15 |
| 2008 | -9.817 | 172 |
| 2007 | 0.518 | 162 |
| 2006 | 2.606 | 139 |
| 2005 | 2.745 | 130 |
| 2004 | 1.237 | 151 |
| 2003 | 0.921 | 140 |
| 2002 | 1.294 | 128 |
| 2001 | -1.921 | 157 |
| 2000 | 15.185 | 4 |
| 1999 | -.823 | 135 |
| 1998 | 1.733 | 119 |
| 1997 | 2.781 | 107 |
| 1996 | -1.766 | 139 |
| 1995 | -1.504 | 114 |
| 1994 | -6.446 | 124 |
| 1993 | 1.663 | 83 |
| 1992 | 9.694 | 12 |
| 1991 | -10.522 | 121 |
| 1990 | 5.316 | 40 |
| 1989 | -5.547 | 103 |
| 1988 | 3.755 | 57 |
| 1987 | 5.252 | 39 |
| 1986 | 1.226 | 81 |