| 时间 | 值 （万人） | 世界排名 |
|---|---|---|
| 2016 | 20765.3 | 5 |
| 2015 | 20596.2 | 5 |
| 2014 | 20421.3 | 5 |
| 2013 | 20240.9 | 5 |
| 2012 | 20056.1 | 5 |
| 2011 | 19868.7 | 5 |
| 2010 | 19679.6 | 5 |
| 2009 | 19489.6 | 5 |
| 2008 | 19297.9 | 5 |
| 2007 | 19102.7 | 5 |
| 2006 | 18901.2 | 5 |
| 2005 | 18691.7 | 5 |
| 2004 | 18473.8 | 5 |
| 2003 | 18248.2 | 5 |
| 2002 | 18015.1 | 5 |
| 2001 | 17775.1 | 5 |
| 2000 | 17528.8 | 5 |
| 1999 | 17275.9 | 5 |
| 1998 | 17017.1 | 5 |
| 1997 | 16754.5 | 5 |
| 1996 | 16491.3 | 5 |
| 1995 | 16229.7 | 5 |
| 1994 | 15970.5 | 5 |
| 1993 | 15713.3 | 5 |
| 1992 | 15456.4 | 5 |
| 1991 | 15197.7 | 5 |
| 1990 | 14935.2 | 5 |
| 1989 | 14669.2 | 6 |
| 1988 | 14400.2 | 6 |
| 1987 | 14127.3 | 6 |
| 1986 | 13849.9 | 6 |