| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 204.2 | 65 |
| 2015 | 198.9 | 66 |
| 2014 | 193.7 | 62 |
| 2013 | 188.7 | 62 |
| 2012 | 183.7 | 61 |
| 2011 | 178.8 | 61 |
| 2010 | 174.1 | 61 |
| 2009 | 169.5 | 61 |
| 2008 | 165.1 | 61 |
| 2007 | 160.8 | 61 |
| 2006 | 156.6 | 61 |
| 2005 | 152.6 | 61 |
| 2004 | 148.7 | 62 |
| 2003 | 144.9 | 62 |
| 2002 | 141.3 | 62 |
| 2001 | 137.8 | 62 |
| 2000 | 134.3 | 63 |
| 1999 | 131 | 62 |
| 1998 | 127.8 | 63 |
| 1997 | 124.6 | 64 |
| 1996 | 121.6 | 66 |
| 1995 | 118.6 | 66 |
| 1994 | 115.7 | 67 |
| 1993 | 112.8 | 70 |
| 1992 | 110 | 71 |
| 1991 | 107.3 | 73 |
| 1990 | 104.6 | 71 |
| 1989 | 101.9 | 70 |
| 1988 | 99.3 | 71 |
| 1987 | 96.7 | 72 |
| 1986 | 94.2 | 74 |