| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 46.82 | 125 |
| 2015 | 51.31 | 146 |
| 2014 | 56.72 | 142 |
| 2013 | 58.55 | 147 |
| 2012 | 60.98 | 143 |
| 2011 | 63.98 | 139 |
| 2010 | 62.11 | 138 |
| 2009 | 57.11 | 140 |
| 2008 | 64.13 | 140 |
| 2007 | 67.9 | 132 |
| 2006 | 66.82 | 133 |
| 2005 | 66.05 | 134 |
| 2004 | 69.08 | 126 |
| 2003 | 65.96 | 122 |
| 2002 | 66.03 | 117 |
| 2001 | 69.54 | 104 |
| 2000 | 49.15 | 148 |
| 1999 | 46.36 | 144 |
| 1998 | 44.42 | 147 |
| 1997 | 41.55 | 154 |
| 1996 | 40.39 | 156 |
| 1995 | 44.69 | 145 |
| 1994 | 42.37 | 137 |
| 1993 | 43.78 | 128 |
| 1992 | 45.36 | 123 |
| 1991 | 39.52 | 131 |
| 1990 | 45.87 | 115 |
| 1989 | 39.78 | 117 |
| 1988 | 38.04 | 115 |
| 1987 | 38.14 | 108 |
| 1986 | 30.64 | 121 |