| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 2873896 | 62 |
| 2015 | 2778724 | 62 |
| 2014 | 2680322 | 62 |
| 2013 | 2522266 | 63 |
| 2012 | 2373531 | 64 |
| 2011 | 2233567 | 64 |
| 2010 | 2101856 | 67 |
| 2009 | 1977912 | 68 |
| 2008 | 1861432 | 73 |
| 2007 | 1751519 | 74 |
| 2006 | 1648233 | 77 |
| 2005 | 1551039 | 79 |
| 2004 | 1491144 | 79 |
| 2003 | 1440836 | 79 |
| 2002 | 1392292 | 80 |
| 2001 | 1345383 | 80 |
| 2000 | 1300115 | 80 |
| 1999 | 1256253 | 80 |
| 1998 | 1213927 | 79 |
| 1997 | 1173028 | 80 |
| 1996 | 1133560 | 85 |
| 1995 | 1095316 | 87 |
| 1994 | 1142231 | 82 |
| 1993 | 1217753 | 75 |
| 1992 | 1298153 | 73 |
| 1991 | 1384106 | 73 |
| 1990 | 1391862 | 73 |
| 1989 | 1333072 | 74 |
| 1988 | 1276841 | 74 |
| 1987 | 1222836 | 74 |
| 1986 | 1171185 | 77 |