| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 3203778 | 49 |
| 2015 | 3065692 | 49 |
| 2014 | 2930167 | 50 |
| 2013 | 2772516 | 56 |
| 2012 | 2623348 | 56 |
| 2011 | 2482205 | 57 |
| 2010 | 2361114 | 59 |
| 2009 | 2254908 | 60 |
| 2008 | 2153480 | 62 |
| 2007 | 2056613 | 62 |
| 2006 | 1964104 | 62 |
| 2005 | 1875756 | 63 |
| 2004 | 1791496 | 67 |
| 2003 | 1710803 | 69 |
| 2002 | 1633849 | 71 |
| 2001 | 1560356 | 71 |
| 2000 | 1490263 | 73 |
| 1999 | 1423139 | 73 |
| 1998 | 1359124 | 74 |
| 1997 | 1297989 | 76 |
| 1996 | 1239682 | 76 |
| 1995 | 1183844 | 77 |
| 1994 | 1130593 | 83 |
| 1993 | 1079737 | 86 |
| 1992 | 1031235 | 88 |
| 1991 | 984786 | 90 |
| 1990 | 940489 | 91 |
| 1989 | 898184 | 92 |
| 1988 | 857837 | 91 |
| 1987 | 819198 | 91 |
| 1986 | 778939 | 92 |