| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 69.68 | 153 |
| 2015 | 70.54 | 154 |
| 2014 | 71.57 | 154 |
| 2013 | 72.81 | 155 |
| 2012 | 74.24 | 155 |
| 2011 | 75.76 | 158 |
| 2010 | 77.27 | 161 |
| 2009 | 79.15 | 163 |
| 2008 | 81.18 | 166 |
| 2007 | 83.31 | 171 |
| 2006 | 85.5 | 176 |
| 2005 | 87.7 | 177 |
| 2004 | 89.67 | 179 |
| 2003 | 91.49 | 180 |
| 2002 | 93.07 | 183 |
| 2001 | 94.47 | 185 |
| 2000 | 95.84 | 187 |
| 1999 | 97.02 | 187 |
| 1998 | 97.84 | 189 |
| 1997 | 98.41 | 190 |
| 1996 | 98.69 | 190 |
| 1995 | 98.58 | 190 |
| 1994 | 98.69 | 189 |
| 1993 | 98.71 | 190 |
| 1992 | 98.68 | 189 |
| 1991 | 98.6 | 186 |
| 1990 | 98.48 | 189 |