| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 445.4 | 24 |
| 2015 | 440.3 | 24 |
| 2014 | 435.2 | 22 |
| 2013 | 430 | 22 |
| 2012 | 424.8 | 22 |
| 2011 | 419.5 | 22 |
| 2010 | 414 | 23 |
| 2009 | 408.4 | 22 |
| 2008 | 402.6 | 21 |
| 2007 | 396.8 | 22 |
| 2006 | 390.8 | 22 |
| 2005 | 384.8 | 22 |
| 2004 | 378.8 | 21 |
| 2003 | 372.7 | 21 |
| 2002 | 366.5 | 21 |
| 2001 | 360.4 | 21 |
| 2000 | 354.2 | 21 |
| 1999 | 348 | 21 |
| 1998 | 341.7 | 22 |
| 1997 | 335.5 | 21 |
| 1996 | 329.2 | 22 |
| 1995 | 323 | 22 |
| 1994 | 316.9 | 22 |
| 1993 | 310.8 | 22 |
| 1992 | 304.7 | 22 |
| 1991 | 298.7 | 24 |
| 1990 | 292.7 | 25 |
| 1989 | 286.7 | 24 |
| 1988 | 280.7 | 25 |
| 1987 | 274.7 | 24 |
| 1986 | 268.8 | 25 |