| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 2264850 | 72 |
| 2015 | 2137839 | 74 |
| 2014 | 2013926 | 76 |
| 2013 | 1847296 | 79 |
| 2012 | 1694454 | 84 |
| 2011 | 1554257 | 86 |
| 2010 | 1425660 | 89 |
| 2009 | 1307703 | 91 |
| 2008 | 1199648 | 93 |
| 2007 | 1100260 | 98 |
| 2006 | 1470995 | 81 |
| 2005 | 1415108 | 83 |
| 2004 | 1361416 | 83 |
| 2003 | 1309622 | 83 |
| 2002 | 1259866 | 84 |
| 2001 | 1212000 | 84 |
| 2000 | 1200865 | 84 |
| 1999 | 1189802 | 82 |
| 1998 | 1178855 | 83 |
| 1997 | 1168010 | 81 |
| 1996 | 1157279 | 81 |
| 1995 | 1146617 | 82 |
| 1994 | 1136068 | 83 |
| 1993 | 1125616 | 84 |
| 1992 | 1115275 | 84 |
| 1991 | 1105000 | 84 |
| 1990 | 1035248 | 87 |
| 1989 | 969899 | 86 |
| 1988 | 908756 | 90 |
| 1987 | 851315 | 90 |
| 1986 | 797577 | 91 |