| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 47.23 | 121 |
| 2015 | 48.42 | 123 |
| 2014 | 49.68 | 124 |
| 2013 | 51.12 | 125 |
| 2012 | 52.73 | 126 |
| 2011 | 54.44 | 127 |
| 2010 | 56.17 | 127 |
| 2009 | 58.22 | 128 |
| 2008 | 60.41 | 129 |
| 2007 | 62.73 | 131 |
| 2006 | 65.21 | 134 |
| 2005 | 67.86 | 136 |
| 2004 | 70.9 | 142 |
| 2003 | 74.03 | 147 |
| 2002 | 77.14 | 150 |
| 2001 | 80.13 | 155 |
| 2000 | 82.94 | 160 |
| 1999 | 85.1 | 165 |
| 1998 | 86.91 | 167 |
| 1997 | 88.39 | 168 |
| 1996 | 89.61 | 173 |
| 1995 | 90.64 | 174 |
| 1994 | 91.58 | 173 |
| 1993 | 92.22 | 173 |
| 1992 | 92.6 | 175 |
| 1991 | 92.74 | 177 |
| 1990 | 92.67 | 175 |
| 1989 | 92 | 172 |
| 1988 | 91.36 | 163 |
| 1987 | 90.74 | 159 |
| 1986 | 90.22 | 159 |