| 时间 | 值 （万人） | 世界排名 |
|---|---|---|
| 2016 | 9.5 | 171 |
| 2015 | 9.5 | 171 |
| 2014 | 9.5 | 171 |
| 2013 | 9.5 | 171 |
| 2012 | 9.5 | 171 |
| 2011 | 9.5 | 172 |
| 2010 | 9.5 | 172 |
| 2009 | 9.5 | 172 |
| 2008 | 9.6 | 172 |
| 2007 | 9.6 | 172 |
| 2006 | 9.7 | 172 |
| 2005 | 9.7 | 172 |
| 2004 | 9.7 | 171 |
| 2003 | 9.7 | 171 |
| 2002 | 9.7 | 171 |
| 2001 | 9.6 | 171 |
| 2000 | 9.6 | 171 |
| 1999 | 9.6 | 171 |
| 1998 | 9.5 | 171 |
| 1997 | 9.5 | 171 |
| 1996 | 9.4 | 171 |
| 1995 | 9.3 | 171 |
| 1994 | 9.2 | 170 |
| 1993 | 9.1 | 170 |
| 1992 | 9 | 170 |
| 1991 | 8.9 | 170 |
| 1990 | 8.8 | 170 |
| 1989 | 8.8 | 168 |
| 1988 | 8.7 | 169 |
| 1987 | 8.6 | 169 |
| 1986 | 8.6 | 169 |