| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 1365.5 | 8 |
| 2015 | 1349.6 | 8 |
| 2014 | 1335.5 | 7 |
| 2013 | 1323 | 6 |
| 2012 | 1310.8 | 6 |
| 2011 | 1300.8 | 6 |
| 2010 | 1295.3 | 7 |
| 2009 | 1289 | 7 |
| 2008 | 1279.3 | 7 |
| 2007 | 1271 | 7 |
| 2006 | 1266.6 | 7 |
| 2005 | 1262 | 6 |
| 2004 | 1254 | 6 |
| 2003 | 1245.6 | 6 |
| 2002 | 1237.4 | 6 |
| 2001 | 1228.2 | 6 |
| 2000 | 1219 | 6 |
| 1999 | 1211.2 | 6 |
| 1998 | 1204 | 6 |
| 1997 | 1196.2 | 6 |
| 1996 | 1187.2 | 6 |
| 1995 | 1179.4 | 6 |
| 1994 | 1171.2 | 6 |
| 1993 | 1160.3 | 6 |
| 1992 | 1148.8 | 6 |
| 1991 | 1137 | 6 |
| 1990 | 1106.8 | 6 |
| 1989 | 1096 | 6 |
| 1988 | 1085.4 | 6 |
| 1987 | 1076.5 | 6 |
| 1986 | 1069.1 | 6 |