| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 55.45 | 79 |
| 2015 | 55.45 | 78 |
| 2014 | 55.42 | 77 |
| 2013 | 55.99 | 73 |
| 2012 | 55.8 | 76 |
| 2011 | 56.93 | 64 |
| 2010 | 56.02 | 71 |
| 2009 | 55.43 | 75 |
| 2008 | 55.11 | 76 |
| 2007 | 54.32 | 80 |
| 2006 | 55.04 | 77 |
| 2005 | 53.42 | 84 |
| 2004 | 52.75 | 85 |
| 2003 | 52.23 | 88 |
| 2002 | 50.98 | 97 |
| 2001 | 52.12 | 87 |
| 2000 | 51.88 | 86 |
| 1999 | 52.24 | 80 |
| 1998 | 53.04 | 78 |
| 1997 | 54.24 | 71 |
| 1996 | 54.03 | 72 |
| 1995 | 53.79 | 72 |
| 1994 | 55.76 | 62 |
| 1993 | 57.65 | 53 |
| 1992 | 59.49 | 46 |
| 1991 | 61.28 | 43 |
| 1990 | 63 | 37 |