| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 123.6 | 85 |
| 2015 | 123.8 | 84 |
| 2014 | 123.9 | 81 |
| 2013 | 123.9 | 80 |
| 2012 | 124 | 80 |
| 2011 | 124.1 | 79 |
| 2010 | 124.2 | 79 |
| 2009 | 124.1 | 78 |
| 2008 | 124.3 | 76 |
| 2007 | 124.5 | 75 |
| 2006 | 124.8 | 75 |
| 2005 | 125.2 | 73 |
| 2004 | 125.5 | 72 |
| 2003 | 125.9 | 72 |
| 2002 | 126.2 | 71 |
| 2001 | 126.5 | 67 |
| 2000 | 126.7 | 67 |
| 1999 | 126.9 | 64 |
| 1998 | 127.1 | 64 |
| 1997 | 127.1 | 62 |
| 1996 | 127.5 | 61 |
| 1995 | 127.8 | 61 |
| 1994 | 128.3 | 60 |
| 1993 | 128.6 | 59 |
| 1992 | 129.1 | 58 |
| 1991 | 129 | 58 |
| 1990 | 128.7 | 56 |
| 1989 | 128.2 | 54 |
| 1988 | 127.5 | 54 |
| 1987 | 126.6 | 54 |
| 1986 | 125.5 | 53 |