| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 46.27 | 84 |
| 2015 | 49.99 | 86 |
| 2014 | 60.29 | 65 |
| 2013 | 62.04 | 54 |
| 2012 | 55.04 | 65 |
| 2011 | 52.73 | 67 |
| 2010 | 55.39 | 65 |
| 2009 | 53.35 | 71 |
| 2008 | 54.4 | 65 |
| 2007 | 54.97 | 67 |
| 2006 | 47.98 | 74 |
| 2005 | 43.96 | 81 |
| 2004 | 36.42 | 92 |
| 2003 | 35.66 | 94 |
| 2002 | 28.84 | 106 |
| 2001 | 22.13 | 120 |
| 2000 | 18.59 | 129 |
| 1999 | 16.77 | 133 |
| 1998 | 15.16 | 136 |
| 1997 | 13.43 | 143 |
| 1996 | 11.49 | 145 |
| 1995 | 12.71 | 143 |
| 1994 | 26.71 | 96 |
| 1993 | 32.47 | 80 |
| 1992 | 50.11 | 44 |