| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 1040261 | 115 |
| 2015 | 1044443 | 114 |
| 2014 | 1048641 | 114 |
| 2013 | 1052856 | 113 |
| 2012 | 1057088 | 111 |
| 2011 | 1061337 | 111 |
| 2010 | 1065597 | 107 |
| 2009 | 1069873 | 107 |
| 2008 | 1074162 | 105 |
| 2007 | 1078479 | 104 |
| 2006 | 1082807 | 101 |
| 2005 | 1087153 | 100 |
| 2004 | 1091510 | 100 |
| 2003 | 1095897 | 99 |
| 2002 | 1100296 | 94 |
| 2001 | 1105179 | 92 |
| 2000 | 1111301 | 90 |
| 1999 | 1117475 | 89 |
| 1998 | 1123674 | 88 |
| 1997 | 1129908 | 85 |
| 1996 | 1136168 | 83 |
| 1995 | 1142480 | 82 |
| 1994 | 1148818 | 79 |
| 1993 | 1155191 | 80 |
| 1992 | 1161591 | 79 |
| 1991 | 1168044 | 78 |
| 1990 | 1174524 | 76 |
| 1989 | 1181040 | 75 |
| 1988 | 1174643 | 75 |
| 1987 | 1157099 | 74 |
| 1986 | 1139841 | 74 |