| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 133.9 | 81 |
| 2015 | 132.2 | 81 |
| 2014 | 130.6 | 78 |
| 2013 | 129.1 | 78 |
| 2012 | 127.5 | 77 |
| 2011 | 126.1 | 77 |
| 2010 | 124.7 | 77 |
| 2009 | 123.3 | 79 |
| 2008 | 122 | 77 |
| 2007 | 120.7 | 77 |
| 2006 | 119.3 | 77 |
| 2005 | 117.8 | 77 |
| 2004 | 116 | 77 |
| 2003 | 114.2 | 78 |
| 2002 | 112.2 | 80 |
| 2001 | 110.1 | 82 |
| 2000 | 108 | 82 |
| 1999 | 105.8 | 81 |
| 1998 | 103.6 | 80 |
| 1997 | 101.3 | 80 |
| 1996 | 99 | 80 |
| 1995 | 96.6 | 82 |
| 1994 | 94.1 | 85 |
| 1993 | 91.6 | 85 |
| 1992 | 89.1 | 86 |
| 1991 | 86.8 | 89 |
| 1990 | 84.8 | 89 |
| 1989 | 83.2 | 88 |
| 1988 | 81.8 | 87 |
| 1987 | 80.6 | 87 |
| 1986 | 79.4 | 86 |