| 时间 | 值 （万人） | 世界排名 |
|---|---|---|
| 2016 | 19.5 | 181 |
| 2015 | 19.4 | 181 |
| 2014 | 19.2 | 180 |
| 2013 | 19.1 | 180 |
| 2012 | 18.9 | 180 |
| 2011 | 18.8 | 181 |
| 2010 | 18.6 | 181 |
| 2009 | 18.5 | 181 |
| 2008 | 18.4 | 181 |
| 2007 | 18.2 | 181 |
| 2006 | 18.1 | 181 |
| 2005 | 18 | 181 |
| 2004 | 17.9 | 181 |
| 2003 | 17.8 | 181 |
| 2002 | 17.7 | 181 |
| 2001 | 17.6 | 181 |
| 2000 | 17.5 | 181 |
| 1999 | 17.4 | 181 |
| 1998 | 17.3 | 181 |
| 1997 | 17.2 | 181 |
| 1996 | 17.1 | 181 |
| 1995 | 17 | 180 |
| 1994 | 16.9 | 179 |
| 1993 | 16.7 | 179 |
| 1992 | 16.6 | 179 |
| 1991 | 16.4 | 180 |
| 1990 | 16.3 | 180 |
| 1989 | 16.2 | 178 |
| 1988 | 16.1 | 178 |
| 1987 | 16.1 | 177 |
| 1986 | 16.1 | 177 |