| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 24291194 | 12 |
| 2015 | 24204894 | 12 |
| 2014 | 24134414 | 12 |
| 2013 | 24073768 | 12 |
| 2012 | 24015641 | 12 |
| 2011 | 23959953 | 12 |
| 2010 | 23906699 | 11 |
| 2009 | 23855728 | 11 |
| 2008 | 23807035 | 11 |
| 2007 | 23760354 | 9 |
| 2006 | 23715819 | 9 |
| 2005 | 23653489 | 9 |
| 2004 | 23559521 | 9 |
| 2003 | 23474345 | 9 |
| 2002 | 23397436 | 9 |
| 2001 | 23327872 | 9 |
| 2000 | 23247957 | 9 |
| 1999 | 23141367 | 9 |
| 1998 | 23041812 | 9 |
| 1997 | 22948896 | 8 |
| 1996 | 22862497 | 8 |
| 1995 | 22776079 | 8 |
| 1994 | 22684474 | 8 |
| 1993 | 22599123 | 8 |
| 1992 | 22519924 | 8 |
| 1991 | 22446370 | 8 |
| 1990 | 22168353 | 8 |
| 1989 | 21500109 | 8 |
| 1988 | 20856410 | 8 |
| 1987 | 20233652 | 8 |
| 1986 | 19633510 | 8 |