| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2013 | 54.28 | 154 |
| 2012 | 50.4 | 162 |
| 2011 | 49.64 | 168 |
| 2010 | 46.14 | 169 |
| 2009 | 38.52 | 177 |
| 2008 | 51.83 | 167 |
| 2007 | 56.2 | 155 |
| 2006 | 58.67 | 147 |
| 2005 | 60.13 | 143 |
| 2004 | 55.37 | 147 |
| 2003 | 50.58 | 156 |
| 2002 | 48.58 | 151 |
| 2001 | 42.14 | 157 |
| 2000 | 47.86 | 149 |
| 1999 | 42.07 | 149 |
| 1998 | 43.6 | 149 |
| 1997 | 51.25 | 132 |
| 1996 | 57.84 | 112 |
| 1995 | 48.92 | 136 |
| 1994 | 53.16 | 113 |
| 1993 | 54.14 | 106 |
| 1992 | 55.26 | 104 |
| 1991 | 57.58 | 92 |
| 1990 | 59.63 | 85 |
| 1989 | 55.21 | 81 |
| 1988 | 47.8 | 88 |
| 1987 | 44.81 | 99 |
| 1986 | 40.06 | 101 |