| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 21157173 | 5 |
| 2015 | 20998543 | 5 |
| 2014 | 20843450 | 4 |
| 2013 | 20663185 | 4 |
| 2012 | 20484478 | 4 |
| 2011 | 20307317 | 4 |
| 2010 | 20131688 | 3 |
| 2009 | 19957578 | 3 |
| 2008 | 19785210 | 3 |
| 2007 | 19613862 | 3 |
| 2006 | 19444230 | 2 |
| 2005 | 19276065 | 2 |
| 2004 | 19109583 | 2 |
| 2003 | 18944086 | 2 |
| 2002 | 18780246 | 2 |
| 2001 | 18617824 | 2 |
| 2000 | 18457027 | 2 |
| 1999 | 18204136 | 2 |
| 1998 | 17899928 | 2 |
| 1997 | 17600805 | 2 |
| 1996 | 17307081 | 2 |
| 1995 | 17017469 | 2 |
| 1994 | 16733092 | 3 |
| 1993 | 16453467 | 3 |
| 1992 | 16178890 | 3 |
| 1991 | 15908157 | 3 |
| 1990 | 15642318 | 3 |
| 1989 | 15364903 | 3 |
| 1988 | 15086094 | 3 |
| 1987 | 14811597 | 3 |
| 1986 | 14542461 | 3 |