| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 336232 | 149 |
| 2015 | 321115 | 149 |
| 2014 | 306569 | 150 |
| 2013 | 292705 | 150 |
| 2012 | 279467 | 150 |
| 2011 | 266828 | 151 |
| 2010 | 254761 | 151 |
| 2009 | 243239 | 151 |
| 2008 | 232239 | 151 |
| 2007 | 221736 | 151 |
| 2006 | 211722 | 151 |
| 2005 | 202161 | 150 |
| 2004 | 193043 | 150 |
| 2003 | 184313 | 150 |
| 2002 | 175989 | 150 |
| 2001 | 168041 | 150 |
| 2000 | 160463 | 150 |
| 1999 | 153206 | 150 |
| 1998 | 146287 | 150 |
| 1997 | 139681 | 150 |
| 1996 | 133381 | 151 |
| 1995 | 127349 | 151 |
| 1994 | 121598 | 151 |
| 1993 | 116106 | 151 |
| 1992 | 112265 | 151 |
| 1991 | 108905 | 151 |
| 1990 | 105651 | 151 |
| 1989 | 102494 | 149 |
| 1988 | 99435 | 149 |
| 1987 | 96459 | 149 |
| 1986 | 93577 | 149 |