| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 23990781 | 13 |
| 2015 | 23549446 | 13 |
| 2014 | 23113442 | 13 |
| 2013 | 22627879 | 13 |
| 2012 | 22152524 | 13 |
| 2011 | 21687163 | 13 |
| 2010 | 21231585 | 13 |
| 2009 | 20785585 | 13 |
| 2008 | 20348962 | 13 |
| 2007 | 19921517 | 13 |
| 2006 | 19503058 | 13 |
| 2005 | 19093395 | 13 |
| 2004 | 18692891 | 13 |
| 2003 | 18299724 | 13 |
| 2002 | 17915357 | 12 |
| 2001 | 17539069 | 12 |
| 2000 | 17171193 | 12 |
| 1999 | 16810055 | 12 |
| 1998 | 16457001 | 12 |
| 1997 | 16111368 | 12 |
| 1996 | 15708651 | 12 |
| 1995 | 15205730 | 13 |
| 1994 | 14721249 | 13 |
| 1993 | 14253855 | 13 |
| 1992 | 13803531 | 14 |
| 1991 | 13367845 | 15 |
| 1990 | 12948048 | 16 |
| 1989 | 12542970 | 16 |
| 1988 | 12152604 | 16 |
| 1987 | 11774844 | 16 |
| 1986 | 11440099 | 16 |