| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 75.48 | 66 |
| 2015 | 75.25 | 66 |
| 2014 | 75.03 | 64 |
| 2013 | 74.8 | 64 |
| 2012 | 74.58 | 63 |
| 2011 | 74.36 | 63 |
| 2010 | 74.14 | 62 |
| 2009 | 73.92 | 62 |
| 2008 | 73.7 | 62 |
| 2007 | 73.49 | 63 |
| 2006 | 73.28 | 63 |
| 2005 | 73.06 | 63 |
| 2004 | 72.85 | 63 |
| 2003 | 72.63 | 62 |
| 2002 | 72.41 | 62 |
| 2001 | 72.19 | 61 |
| 2000 | 71.97 | 61 |
| 1999 | 71.75 | 61 |
| 1998 | 71.52 | 61 |
| 1997 | 71.19 | 61 |
| 1996 | 70.71 | 63 |
| 1995 | 70.22 | 64 |
| 1994 | 69.72 | 64 |
| 1993 | 69.23 | 64 |
| 1992 | 68.73 | 66 |
| 1991 | 68.22 | 65 |
| 1990 | 67.71 | 65 |