| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 77.62 | 5 |
| 2015 | 75.97 | 8 |
| 2014 | 74.25 | 8 |
| 2013 | 69.53 | 9 |
| 2012 | 59.12 | 14 |
| 2011 | 58.06 | 16 |
| 2010 | 56.92 | 17 |
| 2009 | 55.29 | 17 |
| 2008 | 59.05 | 17 |
| 2007 | 50.14 | 19 |
| 2006 | 46.81 | 21 |
| 2005 | 46.59 | 23 |
| 2004 | 48.71 | 17 |
| 2003 | 50.73 | 12 |
| 2002 | 52.86 | 9 |
| 2001 | 56.35 | 8 |
| 2000 | 55.52 | 9 |
| 1999 | 51.88 | 10 |
| 1998 | 49.18 | 13 |
| 1997 | 49.06 | 11 |
| 1996 | 47.65 | 16 |
| 1995 | 47.73 | 16 |
| 1994 | 47.25 | 19 |
| 1993 | 47.04 | 16 |
| 1992 | 49.27 | 16 |
| 1991 | 44.82 | 16 |
| 1990 | 47.89 | 13 |
| 1989 | 47.72 | 11 |
| 1988 | 44.72 | 10 |
| 1987 | 43.97 | 11 |
| 1986 | 41.84 | 12 |