| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 2503700 | 66 |
| 2015 | 2414591 | 67 |
| 2014 | 2330499 | 67 |
| 2013 | 2178167 | 70 |
| 2012 | 2035792 | 72 |
| 2011 | 1902368 | 74 |
| 2010 | 1777855 | 76 |
| 2009 | 1661491 | 79 |
| 2008 | 1552888 | 83 |
| 2007 | 1451113 | 84 |
| 2006 | 1356135 | 87 |
| 2005 | 1267755 | 90 |
| 2004 | 1185712 | 93 |
| 2003 | 1108773 | 96 |
| 2002 | 1036922 | 104 |
| 2001 | 969728 | 107 |
| 2000 | 906971 | 107 |
| 1999 | 848120 | 108 |
| 1998 | 793160 | 108 |
| 1997 | 741762 | 110 |
| 1996 | 693758 | 113 |
| 1995 | 649755 | 114 |
| 1994 | 609701 | 116 |
| 1993 | 572116 | 119 |
| 1992 | 536895 | 122 |
| 1991 | 503755 | 122 |
| 1990 | 472701 | 125 |
| 1989 | 443562 | 125 |
| 1988 | 416255 | 127 |
| 1987 | 390561 | 127 |
| 1986 | 366485 | 129 |