时间 | 值 (人/平方公里) | 世界排名 |
---|---|---|
2016 | 15 | 192 |
2015 | 14.6 | 192 |
2014 | 14.3 | 189 |
2013 | 13.9 | 189 |
2012 | 13.6 | 189 |
2011 | 13.2 | 190 |
2010 | 12.8 | 190 |
2009 | 12.5 | 190 |
2008 | 12.1 | 190 |
2007 | 11.6 | 190 |
2006 | 11.3 | 190 |
2005 | 10.9 | 190 |
2004 | 10.6 | 190 |
2003 | 10.3 | 190 |
2002 | 10 | 190 |
2001 | 9.7 | 191 |
2000 | 9.4 | 191 |
1999 | 9.2 | 189 |
1998 | 8.9 | 190 |
1997 | 8.7 | 189 |
1996 | 8.4 | 189 |
1995 | 8.2 | 189 |
1994 | 8 | 188 |
1993 | 7.8 | 188 |
1992 | 7.5 | 187 |
1991 | 7.3 | 188 |
1990 | 7.1 | 185 |
1989 | 7 | 183 |
1988 | 6.8 | 183 |
1987 | 6.6 | 184 |
1986 | 6.4 | 184 |