| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 77.392 | 11 |
| 2015 | 76.374 | 16 |
| 2014 | 78.103 | 15 |
| 2013 | 79.043 | 13 |
| 2012 | 80.128 | 13 |
| 2011 | 79.265 | 16 |
| 2010 | 77.735 | 21 |
| 2009 | 77.917 | 20 |
| 2008 | 75.415 | 22 |
| 2007 | 74.011 | 25 |
| 2006 | 72.881 | 29 |
| 2005 | 70.088 | 35 |
| 2004 | 75.004 | 20 |
| 2003 | 73.476 | 21 |
| 2002 | 73.663 | 21 |
| 2001 | 74.876 | 17 |
| 2000 | 73.253 | 19 |
| 1999 | 73.445 | 17 |
| 1998 | 74.368 | 15 |
| 1997 | 74.398 | 16 |
| 1996 | 74.843 | 14 |
| 1995 | 73.573 | 13 |
| 1994 | 74.006 | 11 |
| 1993 | 74.23 | 9 |
| 1992 | 73.066 | 9 |
| 1991 | 71.413 | 10 |
| 1990 | 73.631 | 7 |
| 1989 | 71.795 | 5 |
| 1988 | 69.128 | 8 |
| 1987 | 68.947 | 7 |
| 1986 | 71.728 | 4 |