| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 110.3 | 91 |
| 2015 | 110.2 | 90 |
| 2014 | 110 | 87 |
| 2013 | 109.5 | 87 |
| 2012 | 106.9 | 89 |
| 2011 | 106.3 | 89 |
| 2010 | 106.5 | 89 |
| 2009 | 106.3 | 89 |
| 2008 | 106.3 | 88 |
| 2007 | 106.2 | 87 |
| 2006 | 106.1 | 86 |
| 2005 | 106 | 85 |
| 2004 | 105.9 | 85 |
| 2003 | 105.7 | 86 |
| 2002 | 105.4 | 86 |
| 2001 | 104.2 | 85 |
| 2000 | 103.8 | 85 |
| 1999 | 103.4 | 82 |
| 1998 | 103 | 82 |
| 1997 | 102.6 | 78 |
| 1996 | 102.1 | 78 |
| 1995 | 101.5 | 78 |
| 1994 | 101 | 77 |
| 1993 | 100.5 | 76 |
| 1992 | 99.9 | 76 |
| 1991 | 99.3 | 78 |
| 1990 | 98.5 | 77 |
| 1989 | 97.6 | 75 |
| 1988 | 96.6 | 73 |
| 1987 | 95.6 | 74 |
| 1986 | 94.7 | 73 |