| 时间 | 值 （万人） | 世界排名 |
|---|---|---|
| 2016 | 331.4 | 102 |
| 2015 | 334.3 | 101 |
| 2014 | 336.9 | 100 |
| 2013 | 337.7 | 98 |
| 2012 | 335.3 | 98 |
| 2011 | 334.3 | 98 |
| 2010 | 342.1 | 95 |
| 2009 | 350.7 | 94 |
| 2008 | 357.9 | 93 |
| 2007 | 351.1 | 93 |
| 2006 | 343.4 | 91 |
| 2005 | 332.6 | 92 |
| 2004 | 338.4 | 90 |
| 2003 | 334.2 | 89 |
| 2002 | 341.2 | 86 |
| 2001 | 350.2 | 85 |
| 2000 | 343.3 | 85 |
| 1999 | 350.6 | 82 |
| 1998 | 357.5 | 79 |
| 1997 | 364.5 | 79 |
| 1996 | 371.2 | 77 |
| 1995 | 377.2 | 77 |
| 1994 | 383.2 | 75 |
| 1993 | 388.3 | 74 |
| 1992 | 395.2 | 72 |
| 1991 | 401.3 | 70 |
| 1990 | 408.2 | 65 |