| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 211.9 | 57 |
| 2015 | 209.6 | 58 |
| 2014 | 207.2 | 55 |
| 2013 | 204.7 | 55 |
| 2012 | 202.4 | 55 |
| 2011 | 200.2 | 54 |
| 2010 | 198 | 54 |
| 2009 | 196 | 54 |
| 2008 | 193.5 | 55 |
| 2007 | 191.1 | 55 |
| 2006 | 189.4 | 54 |
| 2005 | 188.2 | 54 |
| 2004 | 187 | 54 |
| 2003 | 185.7 | 53 |
| 2002 | 184.3 | 53 |
| 2001 | 182.9 | 52 |
| 2000 | 181.8 | 51 |
| 1999 | 180.7 | 50 |
| 1998 | 179.9 | 50 |
| 1997 | 179.3 | 48 |
| 1996 | 178.9 | 48 |
| 1995 | 178.1 | 48 |
| 1994 | 176.9 | 48 |
| 1993 | 175.5 | 48 |
| 1992 | 173.9 | 47 |
| 1991 | 172 | 47 |
| 1990 | 169.9 | 46 |
| 1989 | 168.2 | 45 |
| 1988 | 166.8 | 45 |
| 1987 | 165.6 | 45 |
| 1986 | 164.5 | 45 |