| 时间 | 值 （万人） | 世界排名 |
|---|---|---|
| 2016 | 3.8 | 207 |
| 2015 | 3.7 | 207 |
| 2014 | 3.7 | 207 |
| 2013 | 3.7 | 206 |
| 2012 | 3.7 | 206 |
| 2011 | 3.6 | 207 |
| 2010 | 3.6 | 207 |
| 2009 | 3.6 | 208 |
| 2008 | 3.6 | 208 |
| 2007 | 3.5 | 207 |
| 2006 | 3.5 | 207 |
| 2005 | 3.5 | 207 |
| 2004 | 3.5 | 207 |
| 2003 | 3.4 | 206 |
| 2002 | 3.4 | 206 |
| 2001 | 3.4 | 206 |
| 2000 | 3.3 | 206 |
| 1999 | 3.3 | 206 |
| 1998 | 3.2 | 206 |
| 1997 | 3.2 | 206 |
| 1996 | 3.1 | 207 |
| 1995 | 3.1 | 207 |
| 1994 | 3 | 206 |
| 1993 | 3 | 206 |
| 1992 | 2.9 | 206 |
| 1991 | 2.9 | 207 |
| 1990 | 2.9 | 207 |
| 1989 | 2.8 | 204 |
| 1988 | 2.8 | 204 |
| 1987 | 2.8 | 204 |
| 1986 | 2.8 | 204 |