| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 67.47 | 84 |
| 2015 | 67.54 | 84 |
| 2014 | 67.62 | 82 |
| 2013 | 67.72 | 81 |
| 2012 | 67.84 | 81 |
| 2011 | 67.97 | 80 |
| 2010 | 68.09 | 77 |
| 2009 | 68.22 | 76 |
| 2008 | 68.35 | 74 |
| 2007 | 68.48 | 72 |
| 2006 | 68.61 | 70 |
| 2005 | 68.74 | 69 |
| 2004 | 68.86 | 68 |
| 2003 | 68.99 | 68 |
| 2002 | 69.12 | 67 |
| 2001 | 69.24 | 66 |
| 2000 | 69.37 | 66 |
| 1999 | 69.54 | 65 |
| 1998 | 69.73 | 65 |
| 1997 | 69.92 | 64 |
| 1996 | 70.11 | 64 |
| 1995 | 70.3 | 63 |
| 1994 | 70.49 | 62 |
| 1993 | 70.67 | 61 |
| 1992 | 70.86 | 58 |
| 1991 | 71.05 | 57 |
| 1990 | 71.23 | 57 |
| 1989 | 71.42 | 55 |
| 1988 | 71.39 | 51 |
| 1987 | 71.18 | 51 |
| 1986 | 70.98 | 50 |