| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 112.7 | 89 |
| 2015 | 113.1 | 88 |
| 2014 | 113.5 | 85 |
| 2013 | 114.2 | 84 |
| 2012 | 114.8 | 83 |
| 2011 | 115.3 | 83 |
| 2010 | 115.4 | 83 |
| 2009 | 115.4 | 83 |
| 2008 | 115.4 | 82 |
| 2007 | 115.3 | 80 |
| 2006 | 115 | 80 |
| 2005 | 114.8 | 79 |
| 2004 | 114.6 | 78 |
| 2003 | 114.3 | 77 |
| 2002 | 113.9 | 77 |
| 2001 | 113.3 | 77 |
| 2000 | 112.5 | 78 |
| 1999 | 111.7 | 76 |
| 1998 | 111 | 76 |
| 1997 | 110.5 | 73 |
| 1996 | 110 | 73 |
| 1995 | 109.6 | 72 |
| 1994 | 109.2 | 72 |
| 1993 | 108.9 | 72 |
| 1992 | 108.8 | 72 |
| 1991 | 108.9 | 72 |
| 1990 | 109.1 | 69 |
| 1989 | 109.3 | 67 |
| 1988 | 109.5 | 65 |
| 1987 | 109.6 | 64 |
| 1986 | 109.6 | 64 |