| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2014 | 62.701 | 73 |
| 2013 | 63.218 | 76 |
| 2012 | 63.616 | 74 |
| 2011 | 63.48 | 73 |
| 2010 | 63.194 | 76 |
| 2009 | 64.955 | 70 |
| 2008 | 66.375 | 61 |
| 2007 | 67.322 | 58 |
| 2006 | 67.027 | 56 |
| 2005 | 65.772 | 59 |
| 2004 | 64.767 | 55 |
| 2003 | 65.018 | 59 |
| 2002 | 62.398 | 67 |
| 2001 | 62.721 | 67 |
| 2000 | 61.023 | 72 |
| 1999 | 61.906 | 59 |
| 1998 | 61.584 | 56 |
| 1997 | 74.185 | 17 |
| 1996 | 71.808 | 19 |
| 1995 | 71.319 | 17 |
| 1994 | 71.018 | 16 |
| 1993 | 71.881 | 14 |
| 1992 | 72.897 | 10 |
| 1991 | 70.72 | 12 |
| 1990 | 65.036 | 24 |
| 1989 | 66.802 | 13 |
| 1988 | 66.793 | 10 |
| 1987 | 66.289 | 15 |
| 1986 | 65.843 | 13 |