| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 2405588 | 70 |
| 2015 | 2356174 | 70 |
| 2014 | 2307329 | 70 |
| 2013 | 2237256 | 70 |
| 2012 | 2169310 | 70 |
| 2011 | 2103428 | 70 |
| 2010 | 2039633 | 69 |
| 2009 | 1977773 | 69 |
| 2008 | 1917870 | 69 |
| 2007 | 1859624 | 72 |
| 2006 | 1803223 | 72 |
| 2005 | 1748533 | 74 |
| 2004 | 1695574 | 73 |
| 2003 | 1644079 | 74 |
| 2002 | 1594216 | 75 |
| 2001 | 1545865 | 76 |
| 2000 | 1499043 | 75 |
| 1999 | 1453517 | 75 |
| 1998 | 1409433 | 75 |
| 1997 | 1366687 | 75 |
| 1996 | 1325292 | 75 |
| 1995 | 1285043 | 75 |
| 1994 | 1246069 | 76 |
| 1993 | 1208277 | 78 |
| 1992 | 1170851 | 80 |
| 1991 | 1130042 | 82 |
| 1990 | 1090709 | 81 |
| 1989 | 1052744 | 81 |
| 1988 | 1016151 | 83 |
| 1987 | 980734 | 82 |
| 1986 | 946598 | 82 |