| 时间 | 值 （万人） | 世界排名 |
|---|---|---|
| 2016 | 19320.3 | 6 |
| 2015 | 18938.1 | 6 |
| 2014 | 18554.6 | 6 |
| 2013 | 18171.3 | 6 |
| 2012 | 17791.2 | 6 |
| 2011 | 17418.4 | 6 |
| 2010 | 17056 | 6 |
| 2009 | 16705 | 6 |
| 2008 | 16364.5 | 6 |
| 2007 | 16033.3 | 6 |
| 2006 | 15709.4 | 6 |
| 2005 | 15391 | 6 |
| 2004 | 15078 | 6 |
| 2003 | 14770.3 | 6 |
| 2002 | 14465.4 | 7 |
| 2001 | 14160.1 | 7 |
| 2000 | 13852.3 | 7 |
| 1999 | 13540.6 | 7 |
| 1998 | 13225.3 | 7 |
| 1997 | 12908.7 | 7 |
| 1996 | 12593.8 | 7 |
| 1995 | 12282.9 | 8 |
| 1994 | 11977 | 8 |
| 1993 | 11675 | 8 |
| 1992 | 11374.7 | 8 |
| 1991 | 11073 | 8 |
| 1990 | 10767.9 | 8 |
| 1989 | 10458.8 | 8 |
| 1988 | 10147.5 | 8 |
| 1987 | 9835.7 | 8 |
| 1986 | 9526.4 | 9 |