| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 202.2 | 66 |
| 2015 | 199.9 | 65 |
| 2014 | 197.6 | 61 |
| 2013 | 195.2 | 59 |
| 2012 | 192.9 | 57 |
| 2011 | 190.6 | 57 |
| 2010 | 188.5 | 58 |
| 2009 | 186.5 | 58 |
| 2008 | 184.7 | 58 |
| 2007 | 182.9 | 58 |
| 2006 | 181 | 58 |
| 2005 | 178.9 | 58 |
| 2004 | 176.6 | 58 |
| 2003 | 174.1 | 58 |
| 2002 | 171.4 | 58 |
| 2001 | 168.6 | 58 |
| 2000 | 165.6 | 58 |
| 1999 | 163 | 56 |
| 1998 | 159.8 | 55 |
| 1997 | 156.6 | 54 |
| 1996 | 153.2 | 55 |
| 1995 | 149.6 | 55 |
| 1994 | 145.9 | 55 |
| 1993 | 142.1 | 55 |
| 1992 | 138.3 | 55 |
| 1991 | 134.6 | 55 |
| 1990 | 131.1 | 55 |
| 1989 | 127.9 | 55 |
| 1988 | 125 | 55 |
| 1987 | 122.2 | 56 |
| 1986 | 119.6 | 57 |