| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 89.12 | 59 |
| 2015 | 92.06 | 73 |
| 2014 | 99.03 | 71 |
| 2013 | 102.38 | 68 |
| 2012 | 105.75 | 64 |
| 2011 | 98.72 | 81 |
| 2010 | 86.07 | 89 |
| 2009 | 80.14 | 94 |
| 2008 | 89.43 | 90 |
| 2007 | 96.11 | 75 |
| 2006 | 98.57 | 63 |
| 2005 | 94.75 | 72 |
| 2004 | 90.37 | 77 |
| 2003 | 90.16 | 67 |
| 2002 | 88.47 | 69 |
| 2001 | 94.97 | 56 |
| 2000 | 89.61 | 62 |
| 1999 | 85.73 | 70 |
| 1998 | 91.06 | 62 |
| 1997 | 84.45 | 74 |
| 1996 | 83.51 | 71 |
| 1995 | 87.67 | 59 |
| 1994 | 78.65 | 65 |