| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 62.22 | 11 |
| 2014 | 58.73 | 13 |
| 2013 | 62.54 | 12 |
| 2012 | 57.27 | 15 |
| 2011 | 54.05 | 17 |
| 2010 | 57.27 | 16 |
| 2009 | 58.52 | 16 |
| 2008 | 60.55 | 16 |
| 2007 | 49.7 | 20 |
| 2006 | 49.4 | 20 |
| 2005 | 53.83 | 15 |
| 2004 | 51.47 | 14 |
| 2003 | 54.48 | 10 |
| 2002 | 55.28 | 8 |
| 2001 | 74.54 | 5 |
| 2000 | 73.51 | 4 |
| 1999 | 69.74 | 6 |
| 1998 | 65.16 | 4 |
| 1997 | 48.36 | 13 |
| 1996 | 52.71 | 8 |
| 1995 | 49.99 | 11 |
| 1994 | 50.89 | 12 |
| 1993 | 52.56 | 10 |
| 1992 | 49.31 | 15 |
| 1991 | 49.26 | 13 |
| 1990 | 53.05 | 8 |
| 1989 | 41.11 | 16 |
| 1988 | 38.88 | 17 |
| 1987 | 39.54 | 16 |
| 1986 | 39.08 | 14 |