| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 30.18 | 134 |
| 2015 | 30.46 | 134 |
| 2014 | 30.74 | 132 |
| 2013 | 31.03 | 132 |
| 2012 | 31.32 | 133 |
| 2011 | 31.61 | 134 |
| 2010 | 31.91 | 135 |
| 2009 | 32.2 | 134 |
| 2008 | 32.5 | 132 |
| 2007 | 32.8 | 132 |
| 2006 | 33.1 | 133 |
| 2005 | 33.4 | 133 |
| 2004 | 33.7 | 134 |
| 2003 | 34.01 | 134 |
| 2002 | 34.31 | 134 |
| 2001 | 34.62 | 135 |
| 2000 | 34.74 | 135 |
| 1999 | 34.82 | 135 |
| 1998 | 34.91 | 134 |
| 1997 | 35 | 134 |
| 1996 | 35.08 | 133 |
| 1995 | 35.17 | 133 |
| 1994 | 35.26 | 133 |
| 1993 | 35.34 | 133 |
| 1992 | 35.43 | 133 |
| 1991 | 35.52 | 133 |
| 1990 | 36.92 | 133 |
| 1989 | 38.55 | 132 |
| 1988 | 40.2 | 131 |
| 1987 | 41.88 | 129 |
| 1986 | 43.58 | 127 |