| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 19127890 | 6 |
| 2015 | 18771769 | 6 |
| 2014 | 18419138 | 7 |
| 2013 | 18026746 | 7 |
| 2012 | 17642712 | 7 |
| 2011 | 17266860 | 7 |
| 2010 | 16899015 | 7 |
| 2009 | 16539006 | 7 |
| 2008 | 16186667 | 7 |
| 2007 | 15841834 | 7 |
| 2006 | 15504347 | 7 |
| 2005 | 15174050 | 7 |
| 2004 | 14851230 | 7 |
| 2003 | 14534415 | 7 |
| 2002 | 14224781 | 7 |
| 2001 | 13921743 | 7 |
| 2000 | 13625565 | 7 |
| 1999 | 13334896 | 6 |
| 1998 | 13050816 | 6 |
| 1997 | 12772788 | 6 |
| 1996 | 12425922 | 6 |
| 1995 | 11961986 | 6 |
| 1994 | 11515975 | 6 |
| 1993 | 11086594 | 6 |
| 1992 | 10673781 | 7 |
| 1991 | 10275264 | 8 |
| 1990 | 9892143 | 8 |
| 1989 | 9523307 | 8 |
| 1988 | 9168704 | 9 |
| 1987 | 8826380 | 9 |
| 1986 | 8539349 | 10 |