| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 2.97 | 122 |
| 2014 | 3 | 140 |
| 2013 | 3.5 | 136 |
| 2012 | 2.18 | 137 |
| 2011 | 2.89 | 135 |
| 2010 | 1.75 | 148 |
| 2009 | 2.07 | 137 |
| 2008 | 0.72 | 155 |
| 2007 | 0.63 | 160 |
| 2006 | -.74 | 162 |
| 2005 | 0.5 | 159 |
| 2004 | 0.62 | 155 |
| 2003 | 0.54 | 146 |
| 2002 | 0.92 | 143 |
| 2001 | -17.24 | 159 |
| 2000 | 1.34 | 145 |
| 1999 | 2.8 | 143 |
| 1998 | 3.14 | 123 |
| 1997 | 5.81 | 129 |
| 1996 | 3.8 | 140 |
| 1995 | 4.07 | 132 |
| 1994 | 4.19 | 131 |
| 1993 | 4.42 | 114 |
| 1992 | 3.29 | 111 |
| 1991 | 5.55 | 97 |
| 1990 | 6.85 | 93 |
| 1989 | 10.99 | 85 |
| 1988 | 9.08 | 86 |
| 1987 | 9.43 | 86 |
| 1986 | 9.18 | 87 |