| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 315.6 | 36 |
| 2015 | 314.2 | 36 |
| 2014 | 312.8 | 34 |
| 2013 | 311.5 | 34 |
| 2012 | 310.2 | 34 |
| 2011 | 309 | 34 |
| 2010 | 307.9 | 34 |
| 2009 | 306.8 | 34 |
| 2008 | 305.7 | 34 |
| 2007 | 304.7 | 34 |
| 2006 | 303.7 | 33 |
| 2005 | 302.8 | 33 |
| 2004 | 301.9 | 33 |
| 2003 | 301.1 | 32 |
| 2002 | 300.3 | 32 |
| 2001 | 299.6 | 30 |
| 2000 | 298.9 | 30 |
| 1999 | 298.4 | 29 |
| 1998 | 298 | 28 |
| 1997 | 297.4 | 26 |
| 1996 | 296.5 | 26 |
| 1995 | 294.9 | 26 |
| 1994 | 292.4 | 25 |
| 1993 | 289.1 | 25 |
| 1992 | 285.9 | 25 |
| 1991 | 283.7 | 26 |
| 1990 | 283.2 | 26 |
| 1989 | 284.9 | 25 |
| 1988 | 288.4 | 23 |
| 1987 | 292.3 | 23 |
| 1986 | 294.5 | 22 |