| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 135.6 | 79 |
| 2015 | 134.5 | 79 |
| 2014 | 133.5 | 76 |
| 2013 | 132.9 | 76 |
| 2012 | 132.4 | 75 |
| 2011 | 131.3 | 75 |
| 2010 | 130.7 | 75 |
| 2009 | 130.2 | 75 |
| 2008 | 129.5 | 74 |
| 2007 | 128.7 | 72 |
| 2006 | 128.1 | 72 |
| 2005 | 127.7 | 72 |
| 2004 | 127.4 | 70 |
| 2003 | 127 | 70 |
| 2002 | 126.7 | 70 |
| 2001 | 126.3 | 68 |
| 2000 | 125.8 | 68 |
| 1999 | 125.4 | 67 |
| 1998 | 125 | 67 |
| 1997 | 124.6 | 65 |
| 1996 | 124 | 64 |
| 1995 | 123.3 | 64 |
| 1994 | 122.7 | 64 |
| 1993 | 122.3 | 63 |
| 1992 | 121.9 | 63 |
| 1991 | 121.6 | 61 |
| 1990 | 121.3 | 59 |
| 1989 | 121.1 | 58 |
| 1988 | 121 | 58 |
| 1987 | 120.9 | 58 |
| 1986 | 120.8 | 56 |