| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 71.54 | 109 |
| 2015 | 71.68 | 109 |
| 2014 | 71.58 | 111 |
| 2013 | 71.48 | 112 |
| 2012 | 71.29 | 112 |
| 2011 | 71.13 | 115 |
| 2010 | 70.75 | 118 |
| 2009 | 70.58 | 121 |
| 2008 | 70.74 | 121 |
| 2007 | 69.89 | 127 |
| 2006 | 68.68 | 134 |
| 2005 | 68.57 | 138 |
| 2004 | 68.22 | 141 |
| 2003 | 67.73 | 144 |
| 2002 | 67.03 | 148 |
| 2001 | 66.96 | 151 |
| 2000 | 68.34 | 146 |
| 1999 | 68.55 | 147 |
| 1998 | 65.1 | 174 |
| 1997 | 66.32 | 163 |
| 1996 | 68.35 | 155 |
| 1995 | 69.84 | 149 |
| 1994 | 70.17 | 146 |
| 1993 | 72.47 | 127 |
| 1992 | 74.5 | 113 |
| 1991 | 75.43 | 107 |
| 1990 | 76.31 | 105 |