| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 102.7 | 97 |
| 2015 | 102.5 | 97 |
| 2014 | 102.1 | 94 |
| 2013 | 101.6 | 94 |
| 2012 | 101.2 | 94 |
| 2011 | 101 | 94 |
| 2010 | 101.1 | 93 |
| 2009 | 101.5 | 91 |
| 2008 | 102.2 | 91 |
| 2007 | 103 | 89 |
| 2006 | 103.9 | 87 |
| 2005 | 104.7 | 86 |
| 2004 | 105.4 | 86 |
| 2003 | 106 | 85 |
| 2002 | 106.6 | 84 |
| 2001 | 107.2 | 83 |
| 2000 | 107.8 | 83 |
| 1999 | 108.5 | 79 |
| 1998 | 109.2 | 78 |
| 1997 | 110 | 75 |
| 1996 | 111.3 | 71 |
| 1995 | 113 | 70 |
| 1994 | 115.3 | 68 |
| 1993 | 118.1 | 66 |
| 1992 | 120.9 | 64 |
| 1991 | 123.1 | 60 |
| 1990 | 124.3 | 58 |
| 1989 | 124.2 | 56 |
| 1988 | 123.1 | 57 |
| 1987 | 121.2 | 57 |
| 1986 | 119.2 | 58 |