| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 154.7 | 70 |
| 2015 | 151.7 | 70 |
| 2014 | 148.6 | 67 |
| 2013 | 145.5 | 69 |
| 2012 | 142.5 | 70 |
| 2011 | 139.5 | 71 |
| 2010 | 136.5 | 71 |
| 2009 | 133.6 | 72 |
| 2008 | 130.7 | 71 |
| 2007 | 127.8 | 74 |
| 2006 | 125 | 74 |
| 2005 | 122.2 | 76 |
| 2004 | 119.4 | 76 |
| 2003 | 116.7 | 76 |
| 2002 | 113.9 | 76 |
| 2001 | 111.3 | 81 |
| 2000 | 108.7 | 81 |
| 1999 | 106.3 | 80 |
| 1998 | 103.9 | 79 |
| 1997 | 101.6 | 79 |
| 1996 | 99.4 | 79 |
| 1995 | 97.1 | 81 |
| 1994 | 94.9 | 83 |
| 1993 | 92.7 | 84 |
| 1992 | 90.6 | 84 |
| 1991 | 88.5 | 86 |
| 1990 | 86.4 | 86 |
| 1989 | 84.5 | 85 |
| 1988 | 82.5 | 86 |
| 1987 | 80.6 | 86 |
| 1986 | 78.7 | 87 |