| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2013 | 3.697 | 177 |
| 2012 | 6.083 | 177 |
| 2011 | 3.836 | 178 |
| 2010 | 2.428 | 179 |
| 2009 | 6.288 | 176 |
| 2008 | 11.19 | 177 |
| 2007 | 12.896 | 178 |
| 2006 | 12.84 | 177 |
| 2005 | 12.274 | 175 |
| 2004 | 11.416 | 175 |
| 2003 | 10.748 | 173 |
| 2002 | 10.066 | 172 |
| 2001 | 12.701 | 171 |
| 2000 | 17.266 | 168 |
| 1999 | 15.346 | 162 |
| 1998 | 10.294 | 163 |
| 1997 | 14.839 | 161 |
| 1996 | 13.564 | 160 |
| 1995 | 11.451 | 161 |
| 1994 | 10.428 | 143 |
| 1993 | 10.828 | 138 |
| 1992 | 12.348 | 135 |
| 1991 | 15.665 | 132 |
| 1990 | 14.791 | 128 |
| 1989 | 15.109 | 112 |
| 1988 | 13.459 | 108 |
| 1987 | 13.916 | 109 |
| 1986 | 15.661 | 106 |